Antique Porcelain Knife Switch Electrical Controller c. 1890–1915
Updated August 6, 2026
| Lot number | 0309 |
| Estimate | $10 - $250 |
| Opening bid | $10 |
| Category | Pottery, China & Glass |
| 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 |
Original antique electrical knife switch or controller featuring a white porcelain insulating base, brass operating lever, and cloth-wrapped internal coil. The base is embossed “CONNECT HERE”
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