One of eighty-six early incandescent lamps. Carbon
One of eighty-six early incandescent lamps. Carbon filament lamp, single loop filament (broken), no supports. Lead in wres held by glass bead then through seel clear pear-shaped bulb, with shoulder adjacent to base. Top pip. Siemens & Halske base (brass cylinder attached by plaster with connection to two "wings" sticking out fromplaster done at bottom). Siemens & Halske handwritten on base. No ratings given.