Just looking for a little help with this revolver. It is a model 19-5 with 2 & 1/2" barrel but is finished in matte color. The Standard Catalog shows under variations a gun of this description made for the Connecticut State Police with no markings. Serial on the gun is ANP57.. I don't see that 3 digit prefix listed in the Catalog. Any thoughts on this being issued to Connecticut State Police or just a model 19-5 that was refinished? Thanks in advance for your time.