Your rifle is from the Eastern states, probably New York with its walnut stock, single trigger, and checkered wrist. The barrel has been shortened significantly, probably at least 6" based on how far back the rear sight sits behind the nose cap. In the shortening process, the barrel is cut off on the breech end, and with this gun, the maker's name on the barrel was lost in the process... which reduces collector interest.
The Goulcher lock is a commercial product purchased by the gunsmith from a hardware store along with the other metal mountings. The barrel is attached with round pins instead of the earlier flat wedges, suggesting a later date in the mid-1850s and possibly 1860s. There has been restoration work done to the gun - see the wood splice above the nose of the lock plate - and the gun has been refinished losing its original patina, which hurts its collector value significantly. Perhaps back on the East Coast you could get a few dollars more for it, but in most other areas this is probably a $200 gun.
Shelby Gallien
The Goulcher lock is a commercial product purchased by the gunsmith from a hardware store along with the other metal mountings. The barrel is attached with round pins instead of the earlier flat wedges, suggesting a later date in the mid-1850s and possibly 1860s. There has been restoration work done to the gun - see the wood splice above the nose of the lock plate - and the gun has been refinished losing its original patina, which hurts its collector value significantly. Perhaps back on the East Coast you could get a few dollars more for it, but in most other areas this is probably a $200 gun.
Shelby Gallien