Another Dallas vote. From retired Captain Eddie Walt:
That gun has all the hallmarks of a fifties era Dallas PD gun. If it is, it should letter to Dave's Pawn Shop, 2544 Elm St. in Dallas. My 1956 DPD S&W Combat Masterpiece and my 1958 Colt Trooper both came through there, each as one in a lot of 50. Neither letter mentions a factory DPD roll stamp and, from the unevenness of the stampings, I believe they were done one letter at a time, either by Dave's or by DPD range personnel, before they were issued.

Roy Jinks told me that Dave's Pawn Shop was a S&W distributor in the forties and fifties and he thought they later became Dave's House of Guns. The pawn shop was located just six blocks from Police Headquarters at 106 S. Harwood.