Interesting SAA. I assume the U.S. stamp is on the left side of the frame and that the frame has the serial number stamped just ahead of the trigger guard?
Can you post clear pictures of the U.S. stamp? I'm not a Colt SAA expert by any means. The only Colts I am aware of with a U.S. stamp are either the 7.5 inch barreled Cavalry Models or the reworked "Artillery Models" with 5.5 inch barrels.
A Colt made in 1921 would not fit either of those scenarios.
Either you have a unicorn of great value, or someone stamped the U.S. and you have a great shooter.
The barrel length is incorrect as Colt's have always been offered with 4-3/4" barrels - 5-1/2" and 7-1/2" being the other standard barrel lengths. Also the US stamp is incorrect for that serial number range. Sad to say I think the gun you are looking at has been "messed with". That said if you can get it for a reasonable price it could be a dandy shooter.
Dave
I would shoot that bad boy and enjoy it! It’s still a old Colt and very COOL!Please see the second photo above.
The offer I made was based on the assumption it was a parts gun. The offer was accepted.