Hello, I just joined because I believe that I've found an original 1847 Walker Colt! Where can I have it authenticated?It has "Address Saml Colt New-York" on top of barrel near cylinder,"1847"stamped on the side and the wooden grip is rounded at the top rather than squared off as on the Navy .36 cal. Also, the loader is round and pointed,barrel is octagonal and round. Barrel is rifled.It's complete and works! However,it has pittings on all surfaces as would be consistent with its age.Help!!