how old is this philips light bulb

[johnh]

During a renovation the builders found 2 light globes. Does anybody now what vintage they are?


Have cleaned it up some what. Filament vaporised


House was build about 1912 ~ 1914

[IanB]

What kind of bulb is it? It's hard to tell from the picture, but it seems like it might be a neon lamp? Night light?

[johnh]

No. I think its a standard light bulb. I need to clean it some more.
I can just make out the word  "Philips"

[ScottE]

It looks like an early tungsten filament so I guess it around 1910-1925, but it is hard to tell from the picture.

[Psi]

Does it go?

[IanB]

Does it go?

If you try it, use a low voltage supply like a variac and wind it up slowly. There's a good chance if you just whack 240 V up it it will perish instantly.

[amyk]

Does it go?

If you try it, use a low voltage supply like a variac and wind it up slowly. There's a good chance if you just whack 240 V up it it will perish instantly.

And the mains voltage might not have been 240V at that time either.

[aargee]

... and it depends if it was before or after the light-bulb consortium to limit bulb life.

[johnh]

No it doesn't go filament is blown. See the photo I added to the original post

[bookaboo]

Still a nice find, I wonder if it's possible to get inside and fit a new filament somehow.
Google carefully first though, could be one of those things worth more broken but untouched.

[Kjelt]

For a nice perspective here is a rare Philips movie from 1924 black/white no sound how they made the bulbs by hand and mouth.
From 2 minutes onwards if you have no time to see the entire intro 
http://www.geschiedenis24.nl/speler.program.23957774.html