A LEO friend gave me a S&W Model 19. It is from the fifties. Everything about it says Model 19 except on the frame inside the yoke which reads 29601 with a 7 underneath. It is K-frame marked, with pinned barrel and regressed cylinder. I am wondering if it is a .357 Combat Magnum manufactured after Bill Jordan got his in 1955 and model numbers were stamped in 1957.