When I turned 21 (over 30 yrs ago) I bought my first handgun…. a S&W 645. I shot and shot that pistol!!! I got hurt and needed a few bucks so had to sell it. Always wish I could of kept it. I made a repair to that pistol that stands out to me…. and low and behold the other day I see a 645 with that same repair. Sure enough it’s my old 645 …. same serial number and it’s for sale. Needless to say my first pistol is mine again!!!