One of eighty-six early incandescent lamps. Carbon
One of eighty-six early incandescent lamps. Carbon filament lamp, single loop filament, no filament support. Leain wires not visible. Bulb half-frosted externally from base half way to pip-decorative sculloped edge to frosting.Top pip.Bayonet cap appaently attached by plaster, through insulation at bottom is black. Two elliptical flat brass contact plated. Manufacturer unspecified. No ratings given.
- Object Number:
- carbon filament lamp
- Institution of Electronical Engineering
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