da revolvers

Greetings, All. I need some help... I have a Colt DA revolver with the following stamped on the butt: "USN" and an anchor; "38 DA"; a stamp resembling a sideways trident with a bar underneath its tines; "No 7395"; "NCT"; "16"; "370". It has hard rubber grips with "COLT" on them (i.e. no...