Antique Hand Crank DC Dynamo Teaching Machine
Updated August 6, 2026
| Lot number | 0502 |
| Estimate | $10 - $1,000 |
| Opening bid | $10 |
| Category | Antiques & Furniture |
| Auction | Kevin Shail Antique Collection 4 electric fan |
| Date | August 23, 2026 at 6:00 AM EDT |
| Auction house | Sphere Auctions LLC |
| Location | Sun Prarie, Wisconsin |
Rare antique educational hand-crank DC dynamo demonstration apparatus used in physics classrooms, laboratories, and technical schools to demonstrate mechanical-to-electrical energy conversion.
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