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| Otis King | |||
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Aug-2007 | |||
| "Otis King Model K Slide Rule Calculator, Exce | $152.50 | 06-Aug-2007 | 7 |
| Geniac / Otis King Slide Rule Calculator | $143.50 | 12-Aug-2007 | 18 |
| "Otis King, Round Slide Rule Calculator" | $141.00 | 21-Aug-2007 | 20 |
| OTIS KING SPIRAL SLIDE RULE CALCULATOR & INSTR | $102.50 | 20-Aug-2007 | 14 |
| Vintage British Otis King Calculator Slide Rul | $81.00 | 05-Aug-2007 | 7 |