Very cool find. I think treefarmer is correct.My son sent me this pic, asking what it is or was?
Lotta savvy in this place....so whats your guess?
I would guess there's something missing at the base of the bulb?
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I bet your right TFC, not sure where he got it!Maybe some sort of small fire extinguisher? The bottom looks spring loaded so maybe that spring lets loose above a certain temperature and then it breaks the glass? Total shot in the dark.
Good info man I'll pass it along!Treefarmer is right. See those in antique shops here and there. I've heard they would sometimes use some hazardous stuff in them, so keep it from breaking for more than just how cool it looks. Never seen a spring load like that one. Usually just baseball size glass throwers.