Army Medallion? Any ideas?

[gearnoggin]

Just just found this in my yard that dates back to the 1800's. It's heavy and is about the size of a silver dollar. Looks to be made out of copper or pewter. Has an eagle on the front and a dip in the back in the shape of the eagle on the front. Would like to know what it is.
Thanks,
Matt

 

[DixieLandMan]

It's army and looks like the insignia that goes on the dress cap.

 

[vpnavy]

Great find (and I agree with Dixie! Thanks for sharing...

 

[bdingess]

From the size it looks like a hat badge.