Coiled Tungsten Bi-Filament Lamp, with separate do

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Coiled Tungsten Bi-Filament Lamp, with separate double wreath filaments, 100-220W, fitted with Robins patent Rotary Band, No. 6856-1911, to Bayonet cap for filament selection, English 1910-1945

Details

Category:
Lighting
Object Number:
1989-570
credit:
Bayley, D