Okay since I've gotten into muzzleloading this year I decided to try to check out an old coachgun I got from my great uncle. I am told it is around 120 years old. The barrel has some pitting but its not tooooo bad. The right hammer is worn badly and wont hold cocked. sometimes it will but a slight bump will trigger it. left hammer works pretty good. gun is allover pretty rough but i thought it might be shootable with abit of work. no notable numbers or names on the gun anywhere. under the barrel there was some little slash marks, a few individual numbers and letters but that was about it. anyone know anything possibly about this or its origins, parts.