The buckle you photographed has been covered in previous posts.
It was made in the Lorton Reformatory, Va. {along with cannon carriages} for the reenactment of First Mannassas.
They were $1 each or 12 for 10$... I traded 100 dropped Minies for 12 of 'em.. Still have a few laying around, and they are on lots of NSSA shooters cartridge boxes of the "old" guys.
It is an authentic relic of the 1960's and is in no way Confederate.. Less than 10 bucks, just to get it off the market might be the nice thing to do.