Thank you for the informative post. I am puzzled by something you wrote though. You mention the 1862 Colt by Pietta being made in the smaller 1849 .31 caliber frame.
I bought a 1862 Colt Police by Pietta that is six-shot, whereas the genuine police models are a much smaller five shot model.
Pietta describes it as made on the 1851 navy frame????