Original antique incandescent light bulb with a drawn tungsten filament, pr=
obably made in England just after the turn of the century. This vintage lig=
ht bulb has an oval 1=C2=BD coil anchored filament. Etched on the glass is =
32 A S11 100 and on the early brass bayonet cap fitting is engraved 39m 105=
S-11, Swan's Patent 12739/02 . Shown glowing at around 50 volts for the ph=
otograph. Click on the photo for a bigger image.