I recently purchased a Colt SAA chambered in 32-20 with a 4.5 barrel. I sent the serial number, 281468, to Colt Archives for a letter. I got a note back saying they couldn't find record of my Colt and they believe it was manufactured around 1898. I looked up the number in RL Wilson's book and thought it was around 1906. The only other distinguishing features are hard, brown, plastic grips with rampant Colts. The top of the barrel is double lined. Anyone have any opinion on this? Thank you for your help.