First things first...Welcome!
Second, great find. Looks to be as mentioned before, a limited casting of a local design.
Lastly, as far as metallurgy, there are several methods to find out if it is Bronze, Copper, or a "pot metal" wash. The internet is your friend, and can also be your friend as far as how much you want to invest to find out. Magnets are one way...a cheap way to get some clarity as to the content.
Regardless, that is an unusual and unique find....nicely done!