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.

Details

Category:
Lighting
Object Number:
1923-173/84
type:
carbon filament lamp
credit:
Institution of Electronical Engineering
status:
Permanent collection

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