My master electrician brought this to me yesterday – this is the most random, coolest lamp failure I have ever seen! It looks to me to be a fingerprint failure, and once the envelope actually failed, the filament kinda puked itself out there, too! The lamp was an EHD (120V, 500W) in a Kliegl fresnel. Yes, a Kliegl fresnel.
Awesome.
At first, looking at the thumbnail, I thought the lamp had been retrofitted for use as a key chain.
Seen some really interesting lamp failures (too bad I never get photos of them) and this one is certainly up there.
I really should take further steps to preserve them so I can photograph them. Usually they get thrown out first lol. And now-a-days I see fewer of them, because I usually keep them from happening in the first place.
Had one that looked a lot like this one last winter from a Colourtran mini-ellipse