✅ SOLVED Another whatzit...

[Kyboy]

This was found in a caves floor about 20ft in, close to an army post. It has a concrete like substance in it that I can't chip out. Maybe the wet cave caused the build up. Don't know what the metal is. It's light like aluminum.

 

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[DCMatt]

It is the top part of a handgrenade fuse.



DCMatt

 

[Kyboy]

Most definately is! Good one....thank you sooo much!
I've got dozens of unknowns, I'll have to take some pics.