Do you know what this is? (odd vintage mic)

[tINY]

-tINY

[druhms]

Kind of looks more like an old pa horn. If it's really a mic, that is the strangest one I've seen. I hope someone here can help you out. I'm curious.
Druhms

[kafka]

Geez, man, that's pretty weird. Are you sure it's not a doorbell on a mic stand, or something like that? And why is it all copper? What could possibly be the reason for that?

[Greg Curtis]

Looks like a claxon to me.

[alyricalmind]

Where do you guys find this stuff. lol

[NorseHorse]

Are we sure this is a microphone?

[Harvey Gerst]

Looks like a homemade drum trigger.

[bwack]

ok, definately works as a mic but...

very low gain and major hum unless i ground (via the metal clamp) to my gear. it almost sounds like a contact mic, molded completely in plastic, its not a horn or klaxon i'm pretty sure, the cable goes into the plastic molding and other than the cable there are no signs of elements or openings where sound would be produced or recieved.

could be a trigger, but its mounting makes me think (if its original purpose was drum micing or triggering) that you are supposed to clamp this on a drum rack or stand and it pics up more of the contact vibrations of the kit than the sound.

still interested if anyone has seen this before,

to be more precise, its not copper (though i can see how the picture looks it) just a plastimolding with a 1/4" on a flange connected to a pipe clamp.