I have one similar to that one. Only mine is a confirmed 50Cal Pennsylvania long rifle in perfect shape and has a walnut stock, also I have a flint lock pistol that is paired with it(walnut stock). It has a smashed bull dog head on the grip. Someone said that it was a slam on the king of England at that time.
These suckers work fine. Got them when I lived in Pa. Like neeeeew.
I’ve never shot a flintlock. I need to do that sometime. I’ve done a lot of shooting and hunting with a Thompson Center 50 cal. Hawken I bought back in the 70s. I love those “smokepoles”.