Is it a pre-18?
Guys,
In 1967 my father-in-law, a retired State Trooper, gave me a "target pistol" which he said was a ".22 on a .38 frame". I stashed it in a clean dry place and never even fired it. Had a busy life (5 kids, 19 grandkids and counting, widower) and am now retired myself. I recently resurrected the gun and thought I would do some shooting on my rural 10 ac property. I also started lurking on a bunch of the forms to find out about the gun. It is .22 caliber, serial number K157xxx, 4 inch barrel, square butt, factory service grips and it shows 3 screws on the right side and 1 screw on the front of the trigger guard. Rear sight is adjustable. I'm guessing it is a K-22 Combat Masterpiece. I can only count 4 screws (as I listed above) but the whole business about which are 4 screw and which are 5 screw and where those screws are seems to have a lot of contradictory posts on the various forums.
As a side note I also have my father's Colt .38 Army Special and about a dozen or so of the rounds he carried. He was a Chicago policeman and retired in 1957 after about 35 years on the force. I have never fired it either (but soon will) and from the looks of it he never fired it much either. It is serial number 486xxx.
Any comments or info welcomed