Hi out there,
I am sorry this is not about a BULB but about antique lighting. I have just got a very old looking cardboard box with
"CIELOR Charbons pour lampes a miroir"
carbon sticks, seems they were used for lighting by burning an arc between them. Manufacter is "Charbons Lorraine", Societe le charbon lorraine, 45 rue des Acacais, Paris VXII E
Sticks are about 8 inches long and 0,25 inches in diameter.
I will get webspace till tomorrow to upload a few pictures.
Just was interested if anyone could know how old these are and if theres a collectors worth?
pics will follow, thanks till then