![One of two lamp-bulbs](https://coimages.sciencemuseumgroup.org.uk/312/178/large_smg00043303.jpg)
One of two lamp-bulbs
One of two lamp-bulbs, electric, filament, 2 1/2 c.p. Swan type 4, c.1890
Two lamp-bulbs, electric, filament, 2 1/2 c.p. Swan type 4, c.1890
One of two lamp-bulbs, electric, filament, 2 1/2 c.p. Swan type 4, c.1890
one of two lamp-bulbs, electric, filament, 2 1/2 c.p. Swan type 4, c.1890