You've got me scratching my head with that one Joe. Is it heavy enough to be a master die? Is it carved or stamped?
Here's a recent bullion purchase of mine. Notice how there isn't a trigger guard, just sort of a sling.
The brass plate is stamped, but I don't think a badge manufacturing die would be made of brass. Probably it would be too malleable. That's why I thought perhaps it was a printing or embossing die. But, yeah, I'm stumped, too.
As for your bullion CIB: it's definitely unique! On the one hand the musket lacks most of the expected traditional details; and on the other hand the badge looks almost futuristic. Cool score, sir!