I thought I would start this thread as I don't see one. While I have about 20 regular handguns I mainly collect Boston Police marked handguns. There are a lot of police marked guns out there.
I was going to collect Colt Police Positives with police department markings (along with a patch and badge from each dept) but decided to specialize on Boston because there are so many dept marked guns out there I needed to specialize. Currently I have about 35 Boston marked guns with factory letters, still waiting on 3 more letters.
My premier set is of 3 sequentially numbered Colt Officers Model Target revolvers shipped to Boston PD in 1932. There were only 10 of these guns made for Boston. I have never found or seen another Boston OMT and these three according to the Colt Historian were the only three on the order that had sequential serial numbers, the rest were all within 20 numbers of each other. The Boston Police rack numbers were not sequential, only the serial numbers but that is better anyway. They shoot great.