Original antique light bulb with a carbon filament, probably made in Englan=
=3Dd just after the turn of the century. This vintage light bulb has two 2 =
coi=3Dl filaments that are not supported by a glass stem. The bulb is etche=
d Robe=3Drtson, 200-8, 0.E. It has an early Bakelite UK standard bayonet ca=
p fitting=3D. Shown glowing at around 50 volts for the photograph.