Long story short, this was among things that my wife got from her grandmother. It appears to be a medal commemorating the marriage of Napoleon to his second wife Marie Louise in 1810. It is set in something with a pin on the back. My instinct was that this was a reproduction, but I don't know why such a thing would exist. Do they sell Napoleon medals to tourists in France? I'm not really sure why anyone would have worn this thing. But if it's real that makes it a lot cooler. Anyone have any ideas?
https://britanniacoincompany.com/buy-coins/medals/1810-napoleon-bronze-marriage-medal/ The broach you posted Look like it was made as a broach and not a medal. It seems to be of lesser quality.