Show the back and that may help someone make an ID. I think that you may have something really cool there! Tell more of the story of how and where (general area) it was found.
??are you aware that "fobs",were around it in the 1800's?Resembles a few I have seen,and the swooping eagle is common on things like ribbons from organizations like the Sons Of the Confederacy and Sons Of the Union as well
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I never saw a fob with a separate center piece, but thinking about it. You make the fob in mass quantities then add the different center pieces.some police and fire badges have that eagle on the top like that but not the piece for the strap. I had a few of my badges that the center fell out of if they got slightly bent.