Man, I gotta tell ya after reading the Colt Letter and the highlighted section in the Colt Encyclopedia there's DEFINITELY something "fishy" about this SAA. The letter states "blue" finish. The gun should be blue... No exceptions that I know of! If it were sent to London to be nickeled it would NOT say "blue". Also, the Colt Encyclopedia states "rubber" grips. It has definitely been changed from it's original configuration and that really hurts the collector value. Even if your information is correct, there is no corroboration in the known text books and that leaves too many questions and speculation. Sorry man... I hate to go back on what I said earlier but I didn't have all of the information and wanted to tell you this ASAP so hopefully you can get this figured out.