I found this and another part of a buckle(Ithink), a quarter sized disk and two small rings. I only washed it off with water and all of the objects appear to be the same material. They were all found in a ten sq. ft. area about six in. deep in stinky mud on the banks of the cape fear river. i found lots of brass and copper fittings and such,they were bright but dull copper colored or brown (brass). I thought that if they were brass or copper they would be the same as the other brass and copper fittings.I'll try to get the other objects posted and you can compare.