Philmore crystal detectors (2) and crystals - $15

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Philmore open type
Catalog no. 310

The 310 is a radio. Instructions show how to connect an antenna and earphones. Folks could also attach a coil of wire they wound themselves to make tuning more reliable.

5 crystals, 3 are tested.

post id: 7911600567

posted: 2026-01-28 14:39

updated: 2026-03-03 14:16

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Philmore crystal detectors (2) and crystals - collectibles - by...

Philmore open type Catalog no. 310 The 310 is a radio. Instructions show how to connect an antenna and earphones. Folks could also attach a coil of wire they wound themselves to make tuning more...