| Otis King |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Apr-2008 |
| A RARE EARLY BRASS TYPE D OTIS KING'S SLIDE RU | $365.00 | 19-Apr-2008 | 24 |
| Vintage Otis King Spiral Slide Rule Model K # | $190.50 | 27-Apr-2008 | 28 |
| Otis King Slide Rule Calculator Model L number | $153.50 | 23-Apr-2008 | 13 |
| VINTAGE BRASS OTIS KINGS CALCULATOR MODEL K SL | $132.50 | 06-Apr-2008 | 17 |
| Otis King Slide Rule Calculator Model K | $100.00 | 23-Apr-2008 | 7 |
| Otis King calculator - cylinder slide rule in | $65.00 | 20-Apr-2008 | 1 |
| Otis King Model K Cylindrical Slide Rule | $33.90 | 05-Apr-2008 | 6 |