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| Otis King | |||
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Jun-2008 | |||
| Otis King Slide Rule Calculator Model L number | $187.50 | 28-Jun-2008 | 20 |
| SLIDE RULE round tube telescope OTIS KING cyli | $152.50 | 23-Jun-2008 | 16 |
| VINTAGE Otis King Model K Slide Rule CALCULATO | $138.50 | 08-Jun-2008 | 10 |
| Otis King Model K Type A 1920's Slide Rule Bla | $124.50 | 02-Jun-2008 | 13 |
| Otis King Slide Rule Calculator Model K number | $91.00 | 28-Jun-2008 | 10 |
| Otis King Cylindrical Pocket Slide Ruler | $56.99 | 14-Jun-2008 | 6 |