I have what looks like a Navy Colt 1851 or 1860. It's been in a fire and the customer needs to know what is the value. I think it might be a reproduction based on the fact that there are 4 screws on the side next to the grip. On all the pictures I find originals have only three and reproductions have 4. Yet the top of the barrel is stamped with "address Colts manufacturing..." and has a Colts Patent but no number. I am not a Colt guy so I need some pointers if any.

Doug Jones