100-400 or so
1948. Worth spending the $30 to get it lettered by Smith and Wesson, IMHO.
1948
@1947
Look on the butt of the revolver.
i think 1966
100-1000 USD.
Standard Catalog of Smith and Wesson, 3rd, ed.
100-400 USD depending on condition, box, papers, accessories, etc..
Call S&W with the serial number or look it up in the Standard Catalog of Smith and Wesson, 3rd ed by Supica and Nahas.
If you call S&W, they will tell you.
Your Smith and Wesson K-22 was made in the year 1948,with the serial number K20708.That year the serial numbers were K18732-K73121.I hope that you find this informative.