Thin copper alloy double frame rectangular clasp buckle.
Copper/Copper Alloy | Object #: 1819430
Made out of copper alloy sheet metal. Irregular frame, possibly homemade. Appears to be the shape of a clasp clothing buckle, perhaps for stock buckle or stocking buckle http://1.bp.blogspot.com/_6NYbLdzbrbM/TOhV8qiwNPI/AAAAAAAAAC4/YO431fUeMu4/s1600/garters%2Band%2Bstockings%2Bmontage.JPG