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DUAL FILAMENT LIGHT BULB 115 VOLT, 1920

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DUAL FILAMENT LIGHT BULB 115 VOLT, 1920

Unique Lamp with two Filaments and three connections on the Bayonet base, turning a ring around this moved the locating pins to the other connection. If the first filament blows, simply turn to the other one.

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A1274



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