Love pre-loved and “enhanced “ big bore revolvers. Soo these two have a new home with me, the blue one is 1910 vintage 45LC that has a Numrich replacement barrel and Micro front sight with S&W rear sight well fitted. The nickeled 1917 is I think a Colt refinishing job, has 637 (June 1937?) stamped on the grip frame under the grip. Both spoke to me sooo I bought em!