If he pulled the backing, the machining is looking like junk to me. The machining in the last picture of the clasp looks like it was hammered out with a ball-pen hammer in China. No finished edges on the rivets. It should look like this.
Picture isn't really good, but the pin in the center of the pic is a pin that is rounded over, you're picture doesn't show it. It shows a push pin.
I say junk.