There are a few bulbs like that.
There are a *lot* of bulbs like that, hidden in farmhouse attics. As I
said before, 100 year old bulbs are actually quite common, and every
so often one can find one that is overbuilt enough due to the sloppy
manufacturing tolerances of the era that it is pretty much
bulletproof.
?Sadly they don't make them like that any
more.
If you have ever used an old light bulb, your opinion might be wildly different.
--
Will