Hoberman Expandagon Construction System Advanced
Updated September 25, 2026
| Lot number | 866 |
| Auction | HUGE 3 Night Black Hills Toy Consignment Auction Night 3 |
| Date | October 13, 2026 at 7:00 PM CDT |
| Auction house | D&C Auctions LLC |
| Location | Rapid City, South Dakota |
Kit, a transformable geometric toy created by inventor Chuck Hoberman.
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