square hole token?

[72cheyenne]

Ok, I know this one may be impossible, but maybe one of you have seen something like it. I first thought it was a Chinese cash coin when I dug it up, but there is absolutely no markings on this piece. The front and back are pictured. It measures 1 inch across and the square hole is 1/8 inch exactly. Thanks. Added: Made of copper.

 

[Turfdude1996]

Looks awful similar to mine that I just posted.

 

[Loco-Digger]

I concur with desertfox and MilitariaCollector that your item is part of an Army collar disk