| Keuffel and Esser |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Jun-2007 |
| 1891 W.M. COX KEUFFEL & ESSER K&E SLIDE RULE | $2600.00 | 29-Jun-2007 | 15 |
| KEUFFER & ESSER THACHER'S #4012 SLIDE RULE K&E | $999.99 | 17-Jun-2007 | 1 |
| VINTAGE ANTIQUE KEUFFEL & ESSER SLIDE RULE W/ | $888.91 | 11-Jun-2007 | 22 |
| NOS K&E KEUFFEL ESSER SLIDE RULE 4143 BOX BOOK | $234.50 | 23-Jun-2007 | 34 |
| Keuffel Esser K&E Deci-lon Slide Rule 68 1130 | $227.50 | 29-Jun-2007 | 7 |
| K & E Model 68-1130 Deci-Lon Vintage Pocket Sl | $197.50 | 27-Jun-2007 | 11 |
| K&E Keuffel & Esser Slide Rule 4092 w/ Column | $179.60 | 22-Jun-2007 | 12 |
| Big Slide Rule Slidedisk Emil Tröger Circular | $169.00 | 22-Jun-2007 | 1 |
| Big Slide Rule Slidedisk Emil Tröger Circular | $169.00 | 30-Jun-2007 | 1 |
| Vintage Keuffel Esser K&E 4092 Slide Rule w Ca | $152.50 | 03-Jun-2007 | 10 |
| "Keuffel & Esser Slide Rule # 4081-5, 22"" Lon | $150.00 | 12-Jun-2007 | 1 |
| K+E SLIDE RULE 68 1251 JET-LOG WITH LEATHER CA | $147.50 | 19-Jun-2007 | 8 |
| Keuffel & Esser Slide Rule w/Leather Case & 3 | $144.44 | 10-Jun-2007 | 8 |
| Keuffel & Esser Deci-Lon Slide Rule With Pocke | $132.50 | 14-Jun-2007 | 13 |
| "Keuffel & Esser 4092-5 Slide Rule 22.5"" Long | $127.75 | 14-Jun-2007 | 11 |
| Vintage K&E Keuffel & Esser Wooden Slide Rule | $122.50 | 18-Jun-2007 | 29 |
| "VINTAGE SLIDE RULES K&E DECILON, POST, ARITHM | $120.38 | 26-Jun-2007 | 14 |
| "Keuffel & Esser 10"" Deci Lon Slide Rule Orig | $99.75 | 08-Jun-2007 | 9 |
| "keuffel & esser 22.5"" slide rule" | $96.55 | 27-Jun-2007 | 21 |
| Vintage Keuffel & Esser K&E Pocket Slide Rule | $87.00 | 13-Jun-2007 | 16 |
| Keuffel & Esser ( K & E )Deci-Lon slide rule a | $87.00 | 24-Jun-2007 | 12 |
| KEUFFEL & ESSER CO. LOG LOG DECITRIG SLIDE RUL | $86.00 | 15-Jun-2007 | 12 |
| "Keuffel & Esser 20"" Slide Rule, Model K&E 68 | $86.00 | 05-Jun-2007 | 8 |
| Keuffel & Esser K&E Deci-Lon Slide Rule w/Case | $80.00 | 29-Jun-2007 | 13 |
| "12.75"" OLD & NEW K&E 68-1100 DECILON SLIDE R | $77.99 | 21-Jun-2007 | 5 |
| SLIDE RULE--K&E--Log-Log-Duplex-Decitrig---Vin | $77.77 | 30-Jun-2007 | 8 |
| K+E Deci-Lon 10 #68-1100 slide rule w/case & b | $76.00 | 08-Jun-2007 | 6 |
| Keuffel & Esser K&E 68 1210 Presentation Slide | $74.00 | 10-Jun-2007 | 8 |
| Keuffel & Esser 68 1251 Jet Log Slide Rule Set | $73.00 | 10-Jun-2007 | 11 |
| "2 K & E Slide Rules Trig & Pocket, Cases Boxe | $70.99 | 05-Jun-2007 | 6 |
| Keuffel & Esser 68 1251 Jet Log Slide Rule Set | $68.00 | 03-Jun-2007 | 9 |
| VINTAGE IVORY SLIDE RULE KEUFFEL & ESSER CO. P | $65.00 | 18-Jun-2007 | 2 |
| Keuffel & Esser Co Slide Rule- Complete! | $61.00 | 03-Jun-2007 | 3 |
| VINTAGE 1900 KEUFFEL & ESSER SLIDE RULE 4053-3 | $61.00 | 21-Jun-2007 | 6 |
| VTG K & E LOG LOG DUPLEX DECITRIG 4081 SLIDE R | $61.00 | 02-Jun-2007 | 6 |
| "Vintage Stadia Slide Rule K & E Co. Morocco C | $57.00 | 26-Jun-2007 | 6 |
| Vintage KEUFFEL & ESSER No 4181 SLIDE RULE com | $56.66 | 18-Jun-2007 | 9 |
| "Keuffel Esser & CO 20"" w/ case slide ruler L | $56.36 | 22-Jun-2007 | 7 |
| Keuffel & Esser N-4053-5 slide rule with case | $56.00 | 05-Jun-2007 | 12 |
| K & E 1947 Slide Rule N44081 w 4185C Magnifier | $55.00 | 05-Jun-2007 | 2 |
| KEUFFEL & ESSER K&E DECI-LON VINTAGE SLIDE RUL | $55.00 | 10-Jun-2007 | 4 |
| OLD K+E 20 1/2 INCH SLIDE RULE KEUFFEL & ESSER | $52.00 | 14-Jun-2007 | 5 |
| KE 110 Keuffel & Esser Co. Deci-Lon Slide Rule | $52.00 | 23-Jun-2007 | 10 |
| Slide Rule K+E Model 4081-3 w/ Cases Manuals B | $51.00 | 24-Jun-2007 | 6 |
| Keuffel & Esser K&E Slide Rule Deci-Lon w/Case | $51.00 | 26-Jun-2007 | 8 |
| Vintage Keuffel & Esser K&E 4081-3 Slide Rule | $50.00 | 03-Jun-2007 | 12 |
| K&E DECI-LON 68 1100 Slide Rule w/Case Decilon | $48.50 | 03-Jun-2007 | 11 |
| KEUFFEL & ESSER SLIDE RULER AND CASE N 4053-5 | $47.00 | 30-Jun-2007 | 9 |
| VINTAGE K+E 12 INCH SLIDE RULE KEUFFEL & ESSER | $46.25 | 21-Jun-2007 | 6 |
| K&E Keuffel & Esser 4161 Pocket Slide Rule Man | $46.00 | 06-Jun-2007 | 9 |
| "Keuffel & Esser 20"" Slide Rule K&E 468652 / | $43.00 | 28-Jun-2007 | 10 |
| "K+E 4081-5 20"" SLIDE RULE." | $42.50 | 17-Jun-2007 | 11 |
| "K&E 10"" Slide Rule 4181-3 (50s Model) w/Orig | $42.00 | 02-Jun-2007 | 1 |
| KEUFFEL & ESSER LOG LOG DUPLEX DECITRIG SLIDE | $42.00 | 13-Jun-2007 | 6 |
| "VINTAGE K&E SLIDE RULES 4181 W/CASE, BOOK NIC | $40.00 | 25-Jun-2007 | 5 |
| K&E Keuffel & Esser Deci-Lon Slide Rule 68 110 | $38.99 | 17-Jun-2007 | 4 |
| K&E Deci-Lon Slide Rule w/Case in Original Box | $38.89 | 17-Jun-2007 | 6 |
| "K&E 10"" Slide Rule 4091-3 1930s Doric Model | $38.00 | 18-Jun-2007 | 1 |
| "K&E 10"" Slide Rule N4081-3 (1947-49 Model) w | $38.00 | 01-Jun-2007 | 1 |
| 2 VINTAGE K&E SLIDE RULES in BLACK LEATHER CAS | $37.00 | 08-Jun-2007 | 11 |
| Vintage Keuffel & Esser K&E Pocket Slide Rule | $37.00 | 25-Jun-2007 | 9 |
| K&E Deci-Lon Slide Rule & Leather Case excelle | $36.55 | 11-Jun-2007 | 8 |
| MINT!!!! K&E LOG LOG DUPLEX DECITRIG SLIDE RUL | $36.00 | 15-Jun-2007 | 10 |
| KEUFFEL & ESSER SLIDE RULE W/ CASE & MANUAL - | $36.00 | 15-Jun-2007 | 12 |
| "Keuffel & Esser K&E 20"" Slide Rule N4096 on | $36.00 | 17-Jun-2007 | 3 |
| K & E Model 68-1251 Slide Rule | $36.00 | 16-Jun-2007 | 9 |
| K&E VINTAGE LOG LOG DUPLEX VECTOR SLIDERULE | $35.99 | 16-Jun-2007 | 1 |
| Vintage K & E Log Log Duplex Slide Rule With M | $35.00 | 24-Jun-2007 | 1 |
| "K&E 10"" Slide Rule 4091-3 1930s Doric Model | $35.00 | 23-Jun-2007 | 1 |
| Keuffel & Esser CO. Slide Rule (1964) GP 12 | $33.00 | 12-Jun-2007 | 21 |
| K & E Model 68-1210 Log Log Duplex Decitrig Sl | $33.00 | 23-Jun-2007 | 10 |
| 1 Lot of Four Slide Rules - Keuffel & Esser K& | $32.66 | 28-Jun-2007 | 11 |
| KEUFFEL & ESSER SLIDE RULE W/ CASE GP12 1964 | $31.25 | 05-Jun-2007 | 4 |
| K & E SLIDE RULE in BLACK LEATHER CASE | $31.00 | 30-Jun-2007 | 12 |
| 1947 K & E log log duplex decitrig slide rule | $31.00 | 20-Jun-2007 | 3 |
| 1 Lot of Six Slide Rules - K&E Keuffel & Esser | $31.00 | 28-Jun-2007 | 12 |
| "Vintage Keuffel Esser K&E 4096 Slide Rule w C | $30.59 | 03-Jun-2007 | 7 |
| Vintage K & E COOKE RADIO Slide Rule Supp. Man | $30.10 | 21-Jun-2007 | 10 |
| "K&E 10"" Slide Rule 4092-3S 1936 Model w/Orig | $30.00 | 29-Jun-2007 | 1 |
| Very Rare Keuffel & Esser slide rule model #58 | $30.00 | 05-Jun-2007 | 3 |
| VINTAGE IVORY SLIDE RULE KEUFFEL & ESSER CO. P | $30.00 | 24-Jun-2007 | 8 |
| K & E Model 4161-1 Pocket Slide Rule with Manu | $29.00 | 23-Jun-2007 | 7 |
| Old Keuffel & Esser Slide Rule--Dated 1900-Lea | $29.00 | 23-Jun-2007 | 8 |
| "Vintage K & E pocket slide rule 4181-1, in bo | $29.00 | 25-Jun-2007 | 4 |
| Vintage K&E Keuffel&Esser slide rule N9081-3 c | $28.00 | 24-Jun-2007 | 5 |
| Post Versalog w/Manual and bonus K&E Slide Rul | $28.00 | 06-Jun-2007 | 7 |
| Vintage KEUFFEL & ESSER K&E * 4092 SLIDE RULE | $28.00 | 17-Jun-2007 | 9 |
| Keuffel & Esser LOG DUPLEX DECITRIG Slide Rule | $27.50 | 07-Jun-2007 | 3 |
| Vintage Keuffel & Esser K E Slide Rule 4081-3 | $27.50 | 03-Jun-2007 | 1 |
| Nice K&E Slide Rule With Case | $26.55 | 28-Jun-2007 | 4 |
| Keuffel & Esser K&E Slide Rule 4081-3 | $26.50 | 26-Jun-2007 | 5 |
| "K & E SLIDE RULES #4181-3 in orig. box, copyr | $26.00 | 05-Jun-2007 | 5 |
| Nice K & E Slide Rule 681497 | $26.00 | 10-Jun-2007 | 10 |
| Keuffel & Esser Slide Rule 68-1251 | $25.99 | 21-Jun-2007 | 10 |
| Vintage K & E Doric 9068 6 3/4'' Slide Rule wi | $25.49 | 05-Jun-2007 | 3 |
| "KEUFFEL & ESSER DUPLEX SLIDE RULE, APPROXIMAT | $25.00 | 18-Jun-2007 | 1 |
| Keuffel & Esser 68 1892 Prep Slide Rule Set Mi | $25.00 | 03-Jun-2007 | 1 |
| "K&E Slide Rule, case, belt carrier, inst. & b | $25.00 | 03-Jun-2007 | 1 |
| 1947 Keuffel & Esser SLIDE RULE / CASE Mint Co | $24.99 | 13-Jun-2007 | 1 |
| K E 1947 slide rule 4083-3 log log duplex vect | $24.99 | 04-Jun-2007 | 1 |
| "VINTAGE K & E 4161 POCKET SLIDE RULE, CASE, M | $24.95 | 18-Jun-2007 | 2 |
| "K&E 10"" Slide Rule 4081-3 (1947-49 Model) w/ | $24.95 | 11-Jun-2007 | 1 |
| VERY EARLY K&E BAMBOO OR MAHOGANY SLIDE RULE | $24.00 | 05-Jun-2007 | 1 |
| Vintage Slide Rules K & E Faber Reiss 6 In. St | $24.00 | 20-Jun-2007 | 1 |
| 1947 KEUFFEL & ESSER CO. SLIDE RULE & LEATHER | $23.49 | 04-Jun-2007 | 2 |
| K&E 4092-3 Slide Rules ~TWO | $23.01 | 16-Jun-2007 | 4 |
| Rare K&E Mannheim Wood Slide Rule No. 41 Pat J | $22.50 | 30-Jun-2007 | 5 |
| "Keuffel & Esser slide rules catalog books, 19 | $22.48 | 20-Jun-2007 | 3 |
| N.O.S. Keuffel and Esser #4081 Slide Rule | $22.00 | 18-Jun-2007 | 7 |
| Wooden Keuffel & Esser Slide Rule in Case | $21.77 | 03-Jun-2007 | 7 |
| 1947 Keuffel & Esser #4168 Ivorite slide rule | $21.50 | 25-Jun-2007 | 6 |
| Old Keuffel &Esser Co Slide Rule in Box With D | $21.00 | 05-Jun-2007 | 3 |
| VINTAGE KEUFFEL & ESSER 4053-3 SLIDE RULE / MA | $21.00 | 14-Jun-2007 | 14 |
| "K & E Slide Rule In Leather Case, 1947" | $20.50 | 29-Jun-2007 | 8 |
| Lot of 5 Vintage Slide Rules Box & Case - K&E | $20.50 | 20-Jun-2007 | 7 |
| KEUFFEL & ESSER ENGINEERING SLIDE RULE. | $20.50 | 15-Jun-2007 | 5 |
| K & E (Vintage!) SLIDE RULE & Leather CASE & M | $20.49 | 09-Jun-2007 | 3 |
| VINTAGE K & E SLIDE RULE WITH CASE AND BOX NO | $19.99 | 29-Jun-2007 | 1 |
| IVORY? SLIDE RULE BY KEUFFEL & ESSER CO. | $19.99 | 17-Jun-2007 | 1 |
| Vintage Keuffel & Esser slide rule......L@@K | $19.99 | 06-Jun-2007 | 1 |
| VINTAGE KEUFFEL & ESSER 4092 SLIDE RULE IN CAS | $19.99 | 25-Jun-2007 | 1 |
| Vintage Keuffel & Esser Slide Rule w/Leather C | $19.50 | 03-Jun-2007 | 5 |
| Vintage Keuffel Esser K&E 4139 Slide Rule w Ca | $19.38 | 03-Jun-2007 | 4 |
| Vintage 1947 K&E Doric Slide Rule in Case # N9 | $19.05 | 22-Jun-2007 | 7 |
| Keuffel & Esser K&E Ever-There No. 4097D slide | $18.50 | 14-Jun-2007 | 12 |
| Vintage Slide Rule Keuffel & Esser w Leather C | $18.27 | 15-Jun-2007 | 7 |
| Vintage Keuffel & Esser Slide Rule & Case /Mod | $18.00 | 19-Jun-2007 | 1 |
| STERLING SLIDE RULE KEUFFEL & ESSER CO. GIMBRO | $18.00 | 03-Jun-2007 | 7 |
| 5 VINTAGE SLIDE RULE LOT K&E RICOH RAYTHEON 2 | $17.50 | 01-Jun-2007 | 2 |
| Unique Keuffel & Esser School Slide Rule Cours | $17.28 | 10-Jun-2007 | 4 |
| 1900 Keuffel & Esser Polyphase Slide Rule in O | $16.66 | 04-Jun-2007 | 2 |
| K & E Keuffel & Esser Doric 6762 Slide Rule & | $16.56 | 04-Jun-2007 | 5 |
| "VINTAGE K & E DORIC 9068 6 3/4"" SLIDE RULE W | $16.50 | 22-Jun-2007 | 6 |
| K+E Model #4081-3 slide rule w/case | $16.50 | 22-Jun-2007 | 3 |
| Old Keuffel & Esser Slide Rule 4181-3 w/ Leath | $16.50 | 15-Jun-2007 | 6 |
| Vintage Keuffel & Esser Slide Rule w/case rule | $16.49 | 10-Jun-2007 | 3 |
| Unique Keuffel & Esser School Slide Rule Cours | $16.37 | 03-Jun-2007 | 2 |
| VINTAGE SLIDE RULES KEUFFEL & ESSER CO LEATHER | $16.17 | 13-Jun-2007 | 5 |
| K&E slide rule Keuffel Esser | $16.11 | 19-Jun-2007 | 2 |
| Antique Ivory&Wood Keuffel&Esser Slide Rule/9i | $16.01 | 03-Jun-2007 | 2 |
| VINTAGE KEUFFEL & ESSER K&E SLIDE RULE #N4081- | $16.00 | 17-Jun-2007 | 5 |
| VINT KEUFFEL & ESSER CO. N.Y. SLIDE RULE W LEA | $15.99 | 20-Jun-2007 | 4 |
| Vintage Keuffel & Esser K&E 4080 Slide Rule w | $15.50 | 10-Jun-2007 | 3 |
| Vintage Keuffel & Esser Slide Rule 4053-3 Slid | $15.50 | 05-Jun-2007 | 5 |
| VINTAGE SLIDE RULE KEUFFEL & ESSER WOOD SLIDE | $15.50 | 16-Jun-2007 | 3 |
| Keuffel & Esser 4070-3 Slide Rule & Leather Ca | $15.50 | 17-Jun-2007 | 3 |
| K&E Model 4081-3 Log Log Duplex Decitrig Slide | $15.50 | 23-Jun-2007 | 5 |
| "Vintage K & E Slide Rule, 6 slide rules 4055 | $15.50 | 21-Jun-2007 | 4 |
| Vintage Keuffel & Esser Slide Rule w/Leather C | $15.50 | 02-Jun-2007 | 7 |
| K&E 4083-3 LOG LOG DUPLEX VECTOR Slide Rule an | $15.50 | 24-Jun-2007 | 4 |
| Vintage Keuffel & Esser Slide Rule w/ Leather | $15.01 | 23-Jun-2007 | 2 |
| Vintage Keuffel & Esser K&E 4080-3 Slide Rule | $15.00 | 30-Jun-2007 | 1 |
| K E Keuffel Esser 4081-3S Log Log Duplex Slide | $15.00 | 10-Jun-2007 | 1 |
| "K & E PolyPhase Slide Rule 4053-3 10""; Excel | $14.99 | 20-Jun-2007 | 1 |
| Antique 1900 Keuffel & Esser Slide Rule w/leat | $14.99 | 03-Jun-2007 | 1 |
| "K & E 456 slide rule, 12 inches long" | $14.61 | 12-Jun-2007 | 6 |
| VINTAGE K&E SLIDE RULE 50'S? #4081-C-LEATHER C | $14.61 | 18-Jun-2007 | 6 |
| Two Keuffel & Esser K & E Slide Rules 4139 and | $14.49 | 24-Jun-2007 | 3 |
| VINTAGE 12 INCH SLIDE RULE RULES KEUFFEL ESSER | $14.01 | 17-Jun-2007 | 2 |
| ANTIQUE KEUFFEL & ESSER SLIDE RULE PAT APR 24 | $14.01 | 13-Jun-2007 | 2 |
| Keuffel & Esser Log Log Duplex Decitrig Slide | $14.00 | 25-Jun-2007 | 3 |
| Vintage Keuffel Esser & Co. Slide Ruler Origin | $13.99 | 19-Jun-2007 | 1 |
| Vintage Keuffel & Esser Slide Rule Model 4092- | $13.61 | 19-Jun-2007 | 2 |
| "Keuffel & Esser Vintage 1908 Slide Rule, 4092 | $13.61 | 12-Jun-2007 | 4 |
| 1900 KEUFFEL & ESSER Polyphase Slide Rule BAMB | $13.49 | 11-Jun-2007 | 2 |
| 1947 Keuffel & Esser Slide Rule W/Case N4081-3 | $13.49 | 23-Jun-2007 | 5 |
| 1954 K&E Drafting Equipment & Slide Rule Catal | $13.27 | 12-Jun-2007 | 3 |
| 1908 KEUFFEL & ESSER POLYPHASE DUPLEX 4088-3 S | $13.01 | 17-Jun-2007 | 5 |
| K + E Slide Rules Deci-Lon Manual Keuffel & Es | $13.00 | 24-Jun-2007 | 5 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $12.99 | 04-Jun-2007 | 1 |
| Vintage Keuffel & Esser Slide Rule 1947 + Case | $12.99 | 17-Jun-2007 | 1 |
| "50's K&E Pocket Slide Rule 4150-1 w/orig bx,c | $12.99 | 01-Jun-2007 | 2 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $12.99 | 11-Jun-2007 | 1 |
| 1934 Keuffel & Esser Slide Rule 4080-3 | $12.50 | 27-Jun-2007 | 4 |
| Vintage Keuffel & Esser Slide Rule 4081-3 with | $12.50 | 15-Jun-2007 | 3 |
| "4 SLIDE RULE, K&E, RICOH, GRAPHICAL FIRING TA | $12.50 | 01-Jun-2007 | 12 |
| Vintage Slide Rule Denmark Electric Furnace Sa | $12.50 | 20-Jun-2007 | 2 |
| Keuffel & Esser 68 1892 Prep Slide Rule Set Mi | $12.48 | 10-Jun-2007 | 2 |
| "Keuffel Esser & CO US Gov Slide Ruler 10"" Ma | $12.39 | 17-Jun-2007 | 8 |
| Vintage Keuffel Esser K E Slide Rule Sliderule | $12.01 | 01-Jun-2007 | 2 |
| "K+E 10"" Manheim Slide Rule # 4055 1937 -LIKE | $12.01 | 13-Jun-2007 | 2 |
| Vintage Keuffel Esser K E Slide Rule 4088-3 Sl | $12.01 | 01-Jun-2007 | 2 |
| Vintage ruler Keuffel & Esser Co. slide box 18 | $11.76 | 12-Jun-2007 | 8 |
| 1947 Keuffel and Esser 4081-3 slide rule | $11.75 | 28-Jun-2007 | 6 |
| vintage slide rule by KEUFFEL & ESSER CO NY # | $11.61 | 08-Jun-2007 | 5 |
| VINTAGE ~ K&E SLIDE RULE~ KEUFFEL & ESSER ~ GO | $11.61 | 17-Jun-2007 | 3 |
| VINTAGE KEUFFEL & ESSER K&E SLIDE RULE 68 2063 | $11.50 | 18-Jun-2007 | 1 |
| VINTAGE K & E SLIDE RULE # 4081-3 KEUFFEL & ES | $11.50 | 26-Jun-2007 | 7 |
| KEUFFEL & ESSER VINTAGE SLIDE RULE W/CASE NICE | $11.49 | 25-Jun-2007 | 3 |
| VINTAGE K&E SLIDE RULE MDL 4081-3S DUPLEX DECI | $11.27 | 01-Jun-2007 | 2 |
| Keuffel & Esser K&E 68-1617 Slide Rule & Leath | $10.92 | 20-Jun-2007 | 2 |
| Vintage K & E Slide Rule 4081-3 with Black Cas | $10.52 | 07-Jun-2007 | 1 |
| COPYRIGHT 1947 KEUFFEL & ESSER CO. SLIDE RULE | $10.50 | 21-Jun-2007 | 5 |
| Keuffel & Esser 68 1892 Prep Slide Rule Set Mi | $10.50 | 08-Jun-2007 | 4 |
| VINTAGE N4081-3 KEUFFEL & ESSER SLIDE RULE W/ | $10.50 | 13-Jun-2007 | 2 |
| 10 5/8 Inch long Slide Rule by Keuffel & Esser | $10.50 | 28-Jun-2007 | 4 |
| VINTAGE KEUFFEL & ESSOR SLIDE RULE 4091-3 ANTI | $10.49 | 23-Jun-2007 | 2 |
| Antique Keuffel & Esser Beginner's Slide Rule | $10.49 | 07-Jun-2007 | 2 |
| K & E Slide Rule w/Case - Very Old Model | $10.00 | 27-Jun-2007 | 1 |
| K + E LOG-LOG SLIDE RULE WITH LEATHER CASE VIN | $9.99 | 27-Jun-2007 | 1 |
| Keuffel and Esser Log Log Duplex Decitrig slid | $9.99 | 17-Jun-2007 | 1 |
| Keuffel & Esser Co. Slide Rule and Manual | $9.99 | 03-Jun-2007 | 1 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE 4054 | $9.99 | 21-Jun-2007 | 1 |
| K+E SLIDE RULE 68 1892 K-12 PREP NEW! | $9.99 | 19-Jun-2007 | 1 |
| Unique Keuffel & Esser School Slide Rule Cours | $9.99 | 24-Jun-2007 | 1 |
| K & E CO. SLIDE RULE NO. 4088 WITH CASE | $9.99 | 24-Jun-2007 | 1 |
| OLD K & E KEUFFEL & ESSER OAK SLIDE RULE W/CAS | $9.99 | 03-Jun-2007 | 2 |
| K+E SLIDE RULE 68 1892 K-12 PREP NEW! | $9.99 | 28-Jun-2007 | 1 |
| KEUFFEL & ESSER Co. NY 4053-3 SLIDE RULE & ORI | $9.99 | 15-Jun-2007 | 1 |
| 1939 Earliest Model K&E Keuffel Esser Slide Ru | $9.99 | 07-Jun-2007 | 1 |
| K&E K & E SLIDE RULE 4054 LEATHER CASE | $9.99 | 08-Jun-2007 | 1 |
| KEUFFEL & ESSER SLIDE RULE | $9.99 | 05-Jun-2007 | 1 |
| "VINTAGE K&E SLIDE RULE 4070-3 POLYPHASE DUPLE | $9.99 | 20-Jun-2007 | 1 |
| "Old Keuffel & Esser Co. Slide Rule, With Case | $9.99 | 05-Jun-2007 | 1 |
| KEUFFEL & ESSER KE SLIDE RULE CATALOG 1939 BOS | $9.99 | 19-Jun-2007 | 1 |
| "VINTAGE SLIDE RULE,LEATHER CASE,KEUFFEL & ESS | $9.99 | 04-Jun-2007 | 1 |
| "K&E DORIC 9068 SLIDE RULE, CASE & BOX, 1949" | $9.99 | 18-Jun-2007 | 1 |
| Vintage K&E N4041 Slide Rule wOrig Case ExCond | $9.99 | 28-Jun-2007 | 2 |
| Antique Keuffel & Esser Cherry Wood Slide-Rule | $9.99 | 09-Jun-2007 | 3 |
| Antique Slide Rule KEUFFEL & ESSER CO.NY#4098A | $9.98 | 03-Jun-2007 | 1 |
| VINTAGE KEUFFEL & ESSER CO. SLIDE RULE WITH CA | $9.95 | 24-Jun-2007 | 1 |
| K&E 4083-1 slide rule and Leather Case | $9.95 | 27-Jun-2007 | 1 |
| "VINTAGE KEUFFEL & ESSER CO. SLIDE RULE PAT. 1 | $9.95 | 24-Jun-2007 | 1 |
| Vintage Keuffel & Esser (K&E) 4090-3 Slide Rul | $9.95 | 07-Jun-2007 | 1 |
| K&E Polyphase Slide Rule | $9.95 | 12-Jun-2007 | 1 |
| 1900 KEUFFEL & ESSER CO. SLIDE RULE W/LEATHER | $9.95 | 24-Jun-2007 | 1 |
| 1939 K&E Keuffel Esser Slide Rule 4071-3 Polyp | $9.40 | 04-Jun-2007 | 1 |
| Vintage Slide Rule Keuffel & Esser N4058W w/ma | $9.28 | 19-Jun-2007 | 5 |
| Vintage 1900 Keuffel Esser Slide Rule Wood W/ | $9.27 | 27-Jun-2007 | 3 |
| KEUFFEL&ESSER CO. SLIDE RULE PAT.JUNE 5 00 DEC | $9.25 | 27-Jun-2007 | 5 |
| Keuffel & Esser (K&E) SLIDE RULE/Leather Case | $9.00 | 05-Jun-2007 | 1 |
| K & E Keuffel & Esser Mannheim Slide Rule & Ca | $8.95 | 04-Jun-2007 | 2 |
| KEUFFEL & ESSER CO SLIDE RULE 1908 | $8.50 | 13-Jun-2007 | 4 |
| Slide Rule Manual K&E Log Log DUPLEX DECITRIG | $8.05 | 21-Jun-2007 | 4 |
| K + E Slide Rules Deci-Lon An Instruction Manu | $8.05 | 18-Jun-2007 | 2 |
| Vintage Ivory K&E Keuffel & Esser Slide Rule 1 | $8.05 | 16-Jun-2007 | 3 |
| "KEUFFEL & ESSER CO. SLIDE RULE INSTRUCTIONS, | $8.00 | 30-Jun-2007 | 1 |
| Keuffel & Esser K&E Slide Rule Ruler w/case | $8.00 | 04-Jun-2007 | 6 |
| VINTAGE K+E SLIDE RULE BOX ONLY KEUFFEL & ESSE | $8.00 | 21-Jun-2007 | 3 |
| K+E Model N4058W slide rule w/case + instructi | $7.99 | 22-Jun-2007 | 1 |
| Vintage Slide Rule 1930s KEUFFEL & ESSER CO. N | $7.99 | 17-Jun-2007 | 1 |
| VINTAGE KEUFFEL & ESSER SLIDE RULER & CASE 405 | $7.99 | 07-Jun-2007 | 1 |
| SLIDE RULE KEUFFEL & ESSER WOODEN N4058W IN CA | $7.99 | 19-Jun-2007 | 1 |
| KEUFFEL & ESSER SLIDE-RULE N4081-3 COPYRIGHT 1 | $7.99 | 17-Jun-2007 | 2 |
| "Antique Slide Rule, Keuffel & Esser Co. N.Y." | $7.99 | 10-Jun-2007 | 1 |
| K&E Co Slide Rule & Case Whitton Gibson 10 Inc | $7.80 | 17-Jun-2007 | 1 |
| Vintage KEUFEL ESSER K&E 4092-3 Slide Rule | $7.50 | 10-Jun-2007 | 1 |
| Collectible Post K&E Kueffel & Esser Wooden Sl | $7.50 | 24-Jun-2007 | 3 |
| "Keuffel & Esser 11"" slide rule case instruct | $7.20 | 18-Jun-2007 | 2 |
| SLIDE RULE KEUFFEL &ESSER CO NY BABY 7'' | $7.06 | 03-Jun-2007 | 3 |
| Vintage Old K & E Slide Rule Manual Log Book # | $7.00 | 18-Jun-2007 | 1 |
| Wooden Post and K & E Slide Rules | $6.50 | 01-Jun-2007 | 3 |
| Keuffel and Esser Co.. Slide rule | $6.50 | 04-Jun-2007 | 2 |
| "Keuffel & Esser Slide Rule, Model K&E 4053-3, | $6.45 | 05-Jun-2007 | 2 |
| Slide Rule K&E Keuffel & Esser Co. No. 4058W w | $6.24 | 07-Jun-2007 | 3 |
| "Vintage K&E 12"" Slide Rule with Case" | $6.21 | 11-Jun-2007 | 2 |
| Keuffel & Esser SLIDE RULES & CALCULATING INST | $6.00 | 26-Jun-2007 | 1 |
| Keuffel & Esser Slide Rule with Box | $5.99 | 15-Jun-2007 | 1 |
| Vintage K&E Keuffel & Esser Slide Rule Oak and | $5.95 | 27-Jun-2007 | 1 |
| Vintage K&E Slide Rule 4098A & Leather Case Ni | $5.53 | 22-Jun-2007 | 2 |
| K & E co. Slide Rule 4055 10 inch | $5.50 | 30-Jun-2007 | 2 |
| K+E Slide Rule manual and supplement | $5.50 | 22-Jun-2007 | 2 |
| K & E BEGINNER'S SLIDE RULE W/ CASE 4058W | $5.50 | 27-Jun-2007 | 1 |
| Keuffel & Esser Co. N.Y. Slide Rule | $5.50 | 21-Jun-2007 | 2 |
| vintage keuffel & esser slide rule 4058c | $5.00 | 11-Jun-2007 | 1 |
| K+E Slide Rule Manual Log Log DUPLEX DECITRIG | $5.00 | 26-Jun-2007 | 1 |
| "Keuffel & Esser 6"" slide rule leather case" | $5.00 | 10-Jun-2007 | 1 |
| Vintage Beginner's Slide Rule Keuffel & Esser | $4.99 | 10-Jun-2007 | 1 |
| 1 Plastic Metal Keuffel Esser Co Slide Rule En | $4.99 | 17-Jun-2007 | 1 |
| "UNIQUE! KEUFFEL & ESSER 12"" SLIDE RULE w LEA | $4.99 | 12-Jun-2007 | 1 |
| "VINTAGE K & E CELLULOID SLIDE RULE 1937 WITH | $4.99 | 07-Jun-2007 | 1 |
| 2 Old Slide Rules K+E and USAF Air Force Pay | $4.50 | 27-Jun-2007 | 1 |
| Vintage Keuffel & Esser K&E 4054 Slide Rule w | $4.25 | 15-Jun-2007 | 3 |
| Vintage Keuffel @ Esser Co. N.Y. Log Sliderule | $4.14 | 09-Jun-2007 | 4 |
| K&E Slide Rule 4080-3 | $3.26 | 30-Jun-2007 | 5 |
| K&E N4081-3 Slide Rule | $3.25 | 28-Jun-2007 | 2 |
| Antique 1928 Keuffel & Esser Wooden Slide Rule | $3.25 | 14-Jun-2007 | 3 |
| K+E Slide Rule Manual - Log Log Duplex Vector | $3.00 | 19-Jun-2007 | 1 |
| K&E Keuffel & Esser Slide Rules Instruction Ma | $3.00 | 24-Jun-2007 | 1 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $2.95 | 19-Jun-2007 | 1 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $2.95 | 26-Jun-2007 | 1 |
| "OLD SLIDE RULE,K&E 4070-3 12IN LONG" | $2.76 | 03-Jun-2007 | 2 |
| K & E Slide Rule Box | $0.99 | 03-Jun-2007 | 1 |
| KEUFFEL & ESSER rule #4071-3 Machinist Rule wc | $0.99 | 24-Jun-2007 | 1 |
| Vintage Beginner K&E Keuffel & Esser Wooden Sl | $0.99 | 04-Jun-2007 | 1 |
| "Giant 85"" Keuffer & Esser Co. Demonstration | $500.00 | 18-Jun-2007 | 0 |
| "Giant 85"" Keuffer & Esser Co. Demonstration | $400.00 | 23-Jun-2007 | 0 |
| "Giant 85"" Keuffer & Esser Co. Demonstration | $400.00 | 29-Jun-2007 | 0 |
| KEUFFEL & ESSER SLIDE RULE 4081-5 X-LONG LOG L | $99.99 | 26-Jun-2007 | 0 |
| K&E Keuffel & Esser Deci-Lon Slide Rule 68 110 | $49.99 | 10-Jun-2007 | 0 |
| K & E Co Ivory & Wood Vintage Slide Rule Leath | $34.99 | 07-Jun-2007 | 0 |
| Old KEUFFEL & ESSER Log Log DUPLEX Bamboo SLID | $24.95 | 30-Jun-2007 | 0 |
| Vintage K & E Log Log Duplex Slide Rule With M | $23.95 | 10-Jun-2007 | 0 |
| VINTAGE K & E SLIDE RULE PAT APRIL 1924 | $19.99 | 10-Jun-2007 | 0 |
| "Vintage KEUFFEL & ESSER Slide Rule, Pat. June | $19.99 | 26-Jun-2007 | 0 |
| Keuffel & Esser NY slide rule 1900 w leather c | $19.99 | 30-Jun-2007 | 0 |
| 2 Vintage Slide Rules Keuffel & Esser & Teledy | $19.95 | 03-Jun-2007 | 0 |
| "Vintage Keuffel & Esser Co., NY Slide Rule/Or | $19.95 | 12-Jun-2007 | 0 |
| "Vintage Keuffel & Esser Co., NY Slide Rule/Or | $19.95 | 03-Jun-2007 | 0 |
| K&E 4088-3 POLYPHASE SLIDE RULE PRE-1922 KEUFF | $14.99 | 23-Jun-2007 | 0 |
| VINTAGE K+E SLIDE RULE KEUFFEL & ESSER #4055 w | $14.99 | 21-Jun-2007 | 0 |
| SLIDE RULE KEUFFEL & ESSER N.Y. | $14.95 | 08-Jun-2007 | 0 |
| 2 Vintage Slide Rules Keuffel & Esser & Teledy | $14.95 | 11-Jun-2007 | 0 |
| Slide Rule K & E Co Polyphase 4053-3 Leather C | $12.50 | 17-Jun-2007 | 0 |
| K&E Polyphase 4053-3 Keuffel & Esser Slide Rul | $12.00 | 09-Jun-2007 | 0 |
| Vintage Keuffel & Esser Slide Rule 4081-3 with | $12.00 | 01-Jun-2007 | 0 |
| K&E Polyphase 4053-3 Keuffel & Esser Slide Rul | $12.00 | 17-Jun-2007 | 0 |
| Vintage Keuffel & Esser Slide Rule 4081-3 with | $12.00 | 07-Jun-2007 | 0 |
| VINTAGE KRUFFEL & ESSER 877298 SLIDE RULE & CA | $9.99 | 14-Jun-2007 | 0 |
| KEUFFEL & ESSER KE SLIDE RULE # 4053 3 W/PART | $9.99 | 19-Jun-2007 | 0 |
| KEUFFEL & ESSER KE SLIDE RULE # 4081 MANUAL 19 | $9.99 | 19-Jun-2007 | 0 |
| Vintage Keuffel & Esser Slide Rule 1924 Ruler | $9.99 | 09-Jun-2007 | 0 |
| K&E SLIDE RULE 4054 LEATHER CASE | $9.99 | 01-Jun-2007 | 0 |
| 1939 KEUFFEL & ESSER SLIDE RULE #4083 MANUAL | $9.99 | 03-Jun-2007 | 0 |
| 1939 KEUFFEL & ESSER SLIDE RULE #4081 MANUAL | $9.99 | 03-Jun-2007 | 0 |
| Keuffel & Esser 68 1892 Prep Slide Rule Set Mi | $9.99 | 03-Jun-2007 | 0 |
| SET 2 MANUALS K&E SLIDE RULE 1955 AND 1932 | $9.99 | 04-Jun-2007 | 0 |
| Keuffel & Esser Co. Slide Rule with Manual | $9.99 | 17-Jun-2007 | 0 |
| Vintage 1928 KEUFFEL & ESSER Engineer SLIDE RU | $9.99 | 10-Jun-2007 | 0 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE 4080-3 LEAT | $9.99 | 16-Jun-2007 | 0 |
| VINTAGE SLIDE RULES KEUFFEL & ESSER CO LEATHER | $9.99 | 04-Jun-2007 | 0 |
| "KEUFFEL & ESSER SLIDE RULE N4041, PAT. JUNE 5 | $9.99 | 02-Jun-2007 | 0 |
| Vintage Keuffel & esser 4053-3 slide rule w/or | $9.99 | 23-Jun-2007 | 0 |
| Keffel & Esser Slide Rule 12 inch Patent Date | $9.99 | 07-Jun-2007 | 0 |
| VINTAGE KRUFFEL & ESSER 877298 SLIDE RULE & CA | $9.99 | 24-Jun-2007 | 0 |
| Vintage Keuffel & Esser Slide Rule Case Ruler | $9.99 | 12-Jun-2007 | 0 |
| 2 Old Slide Rules K+E and USAF Air Force Pay | $9.99 | 12-Jun-2007 | 0 |
| Vintage Keuffel & Esser Slide Rule NR | $9.99 | 13-Jun-2007 | 0 |
| Vintage Keuffel & Esser Slide Rule w Case NR | $9.99 | 13-Jun-2007 | 0 |
| 1 Plastic Metal Keuffel Esser Co Slide Rule En | $9.99 | 03-Jun-2007 | 0 |
| VINTAGE KEUFFEL AND ESSER CO. SLIDE RULE | $9.99 | 03-Jun-2007 | 0 |
| Vintage Keuffel & Esser Engineers Slide Rule # | $9.99 | 07-Jun-2007 | 0 |
| Keuffel & Esser #4058 C Beginner's Slide Rule. | $9.95 | 09-Jun-2007 | 0 |
| VINTAGE KEUFFEL & ESSER K&E SLIDE RULE PATENT | $9.95 | 08-Jun-2007 | 0 |
| K&E Co Slide Rule & Case Whitton Gibson 10 Inc | $9.15 | 07-Jun-2007 | 0 |
| KEUFFEL ESSER K&E Beginner SLIDE RULE 4058W Vi | $9.07 | 29-Jun-2007 | 0 |
| K&E K-12 Prep Slide Rule | $9.00 | 16-Jun-2007 | 0 |
| KEUFFEL & ESSER SLIDE RULE WITH CASE | $8.99 | 23-Jun-2007 | 0 |
| KEUFFEL & ESSER CO SLIDE RULER - Wood & plasti | $8.99 | 18-Jun-2007 | 0 |
| 1947 K & E Log Log Duplex Decitrig Slide Rule | $7.99 | 07-Jun-2007 | 0 |
| Keuffel & Esser Log Log Duplex Slide Rule Manu | $7.99 | 12-Jun-2007 | 0 |
| VINTAGE K+E SLIDE RULE KEUFFEL & ESSER #4055 w | $7.99 | 28-Jun-2007 | 0 |
| SLIDE RULE KEUFFEL & ESSER WOODEN N4058W IN CA | $7.99 | 11-Jun-2007 | 0 |
| "K & E 4058W BEGINNER'S SLIDE RULE, KEEUFFEL & | $7.99 | 16-Jun-2007 | 0 |
| KEUFFEL & ESSER CO N.Y. SLIDE RULE | $7.00 | 05-Jun-2007 | 0 |
| K&E Slide Rule Beginner's 4058W Instruction Bo | $6.99 | 02-Jun-2007 | 0 |
| Vintage 1955 K & E Slide Rule Manual Log #4081 | $6.95 | 11-Jun-2007 | 0 |
| "K&E polyphase slide rule #4053-3 Pat.June 5,1 | $6.00 | 12-Jun-2007 | 0 |
| Keuffel & Esser POLYPHASE SLIDE RULE Instructi | $6.00 | 26-Jun-2007 | 0 |
| 2 Old Slide Rules K+E and USAF Air Force Pay | $5.99 | 19-Jun-2007 | 0 |
| Vintage K&E Keuffel & Esser Slide Rule Oak and | $5.00 | 24-Jun-2007 | 0 |
| K&E Keuffel Esser 4081 Slide Rule Manual SC 19 | $5.00 | 21-Jun-2007 | 0 |
| "K&E polyphase slide rule #4053-3 Pat.June 5,1 | $5.00 | 29-Jun-2007 | 0 |
| K&E Keuffel Esser 4081 Slide Rule Manual SC 19 | $5.00 | 28-Jun-2007 | 0 |
| 1961 K&E Slide Rule/Vinyl Slipcase/Instruction | $5.00 | 11-Jun-2007 | 0 |
| KEUFFEL & ESSER SLIDE RULER | $4.99 | 11-Jun-2007 | 0 |
| KEUFFEL&ESSER SLIDE RULE W/ CASE #4053-3 PAT D | $4.99 | 21-Jun-2007 | 0 |
| Beginners Slide Rule by Kueffel & Esser Compan | $4.99 | 03-Jun-2007 | 0 |
| VINTAGE KEUFFEL & ESSER K&E SLIDE RULE #4058W | $4.99 | 17-Jun-2007 | 0 |
| VINTAGE KEUFFEL & ESSER CO. BEGINNER'S SLIDE R | $4.99 | 12-Jun-2007 | 0 |
| Keuffel and Esser Co.. Slide rule | $4.99 | 04-Jun-2007 | 0 |
| VINTAGE KEUFFEL & ESSER K&E SLIDE RULE #4058W | $4.99 | 26-Jun-2007 | 0 |
| Beginners Slide Rule by Kueffel & Esser Compan | $4.99 | 11-Jun-2007 | 0 |
| 1938 K&E POLYPHASE SLIDE RULE Book Manual | $3.99 | 10-Jun-2007 | 0 |
| K & E Wooden Beginners SLIDE RULE Keuffel & Es | $2.99 | 25-Jun-2007 | 0 |
| Slide Rule Manual K&E POLYPHASE No. 4053 1938 | $2.95 | 21-Jun-2007 | 0 |
| K&E SLIDE RULE MANUAL #4081 LOG LOG DUPLEX DEC | $2.95 | 10-Jun-2007 | 0 |
| OLD SLIDE RULE ~ KEUFFEL & ESSER ~ #4058 W | $1.99 | 04-Jun-2007 | 0 |
| KEUFFEL & ESSER 4053-3 Wooden Slide Rule | $0.99 | 10-Jun-2007 | 0 |
| Vintage Keuffel & Esser Beginner's slide rule | $0.99 | 25-Jun-2007 | 0 |
| K&E Slide Rule 4053-3 | $0.99 | 30-Jun-2007 | 0 |
| "K&E Beginner's Slide Rule, 4058C" | $0.99 | 30-Jun-2007 | 0 |