I just got this this fall. A private sale at my little local gun show. It is a S&W .45 cal model of 1950. It was made in 1955. It uses moon clips for .45acp. I took it to Alabama last week and got to shoot it at my son's place. This revolver is definitely going to be a keeper. We were shooting a heavy steel spinner and it really does the job. Here's a picture of it in the box, and one of the diamond grips.