Vintage mechanical slide calculator magic brain
Updated August 6, 2026
This auction ended on August 6, 2026.
See upcoming auctions from Chip Sparks Auctions.
| Lot number | 229 |
| Auction | Model Trains, Vintage Comics and Mags, Coins, Sports Cards |
| Date | August 6, 2026 at 7:00 PM EDT |
| Auction house | Chip Sparks Auctions |
pocket calculator which belongs to a class of stylus operated adding devices historically known as Addiators
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