One time I was crawling under the floor of a very old house. There was a light bulb(lamp)mounted in a screwshell of ancient vintage. The glass envelope had the pointed tip created by the glass blowing, and vacuum process. The filiment was still intact, it would function.
We later determined it had a platinum filiment, with nickel lead in wires. Circa 1905.
I carefully removed it, and replaced it with a new lamp. I asked permission from the owner, to have it placed in the display, at the local museum. The lady/owner was almost as old as the lamp. It is probably still there.
