Long time silent observer of this thread and all I can say is you all have a bunch of wonderful, unique pieces that serve as a visual history to the Detroit Police Department's many firearms throughout history. With that being said, here is my blued Detroit Police Department Smith & Wesson Model 14-3 6" which was produced in 1975. From what I understand this unique piece was used by the coveted Detroit Police Pistol Team of the era. The reason that this particular Smith & Wesson K-Frame is marked on the frame of the revolver rather the backstrap is due to the grooved backstrap.