Vintage Military Medal Eagle Shield Pin Canteen - Stone

I have a vintage Military Medal type Pin, in good used condition. This item has an eagle on top

with a shield in the middle of eagles chest, and attached to a rope hanging from the pin is a canteen

shaped object, that appears to have had a stone of some kind for the lid. I am not sure what the

canteen is made of, but looks like some kind of seed, that has the look of leather. Please see pics.

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