Couple of small notes: that's a break action, not a front stuffer and it's a cartridge not a purcussion gun.

I'd have to guess it's from the 1880 to 1925 range (most likely 1895-1915).
You need to check the proofs, as it could be either belgin or a cresent made piece. Cresent is known for marking guns however the buyer wanted them marked IE: Acme Hardware, Freds gun shop, etc AKA "Trade Guns"