Ok coin ,token ,or button ? What you think ?

[williedigit]

Gold plate on it and a square hole in center also found a U.S. Pin in the same hole

 

[treblehunter]

IDK
I like the pin, nice

 

[Loco-Digger]

US Army collar disk

 

[trapperart]

Nice finds congrats

 

[Trezurehunter]

I'm with Loco D on this one, especially since it was found in the same hole as the other U.S. Army insignia.

 

[G.I.B.]

Some foreign coins (far east) have square holes in them.