Here is a very cool AMA hat or uniform screw back pin. Has wear from age.
Believed to be pre WW2.  Found in a lot of items from a soldier who fought in WW2.

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See photos as they are an important part of the description and will help you know what you are bidding on. I do not accept returns.  I do my best to describe all items but Sometimes I miss things so the photos are important. . Please Please ask questions. Thanks for bidding and good luck. Check out all my items for some great finds. Lots of cool stuff at my sales. I can combine shipping on most.