Heyya folks,

I'm trying to date, approximately, what I believe is a K22 (not sure if a K22 is also a pre-18 or if there are differences there).

Anyhow, 4" barrel, diamond magna stocks, 5 screw model. Serial number is K is 1753xx. Serial is visible on the underside of barrel, the cylinder, the inside of the ejector and under the grips at the base.

Thanks for any help!