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| Otis King | |||
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Mar-2007 | |||
| Otis King's Model K Calculator (Cylindrical Sl | $200.00 | 26-Mar-2007 | 1 |
| OTIS KING CALCULATOR SLIDE RULE MODEL K BRITIS | $139.48 | 27-Mar-2007 | 6 |