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Description: The lamp is known as the Osmium lamp, with an osmium filament and fitted with a vitrite bayonet cap. The four horseshoe filaments are steadied by hooks of porcelain material carried by glass stems from the end of the bulb. The rated voltage and candle power are unknown. Part: bulb, Material: glass Source: Tyne & Wear Archives & Museums Identifier: emu.ecatalogue.science&industry.482366 Go to resource More Like this...
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