Forgive me because I just posted this Model 15-2 on another Thread, but I thought that it was relevant to this one. This revolver has a 1962 frame and 1964 2" barrel, with matching s/n's. The K509199 s/n puts this one smack dab in the middle of the Model 56 production run, but was apparently not issued to the military and became one of the first Model 15-2 snubbies to be introduced to the public. This revolver was the EDC for my wife's grandfather, an LEO Chief in California.