Any ideas what this might be?

I have no idea what this is… Belt buckle? Scarf clasp? I’ve seen a lot of silver but never anything like this… Any help is appreciated!
Ebay 1-6-13 088c1.jpg
Ebay 1-6-13 087C1.jpg

Probably half of a belt fastening? Looks like a material belt would loop through the slot and be sewn back onto itself.