K615 – K18,731…........1947 (manufacture). But it probably shipped sometime in early 1948. What you have is called a K-22 Masterpiece target revolver. Very big in Bullseye competitive shooting through the 1950s and 1960s, but not so much now. It eventually became the Model 17 about 10 years later. Very desirable, and yours appears to have the original stocks. Assuming you do not have the original box, papers, and tools, maybe $700-$800 in a private sale situation.
"I have no real use for a .22."
Every shooter needs a good .22, whether he knows it or not. And there is no better .22 handgun than a K-22. Think long and hard about trading it off for something else. The original box and tools would increase the value substantially.
It truly is, in my opinion the best gun ever made for the sportsman, plinker of cans, gun lover, or anyone who just enjoys fine pieces of Americana.
"I have no real use for a .22."
Every shooter needs a good .22, whether he knows it or not. And there is no better .22 handgun than a K-22. Think long and hard about trading it off for something else. The original box and tools would increase the value substantially.
When you are not shooting but just staring and appreciating, the tapered-barrel guns have the more attractive profile. (Or so say I; disagreement is anticipated.)
One interesting feature on your gun is the one line "Made In USA" on the frame, this changed about a year after introduction so not as common as the 4 line address guns especially in high condition.
My guess is it would sell rather quickly at $800 if listed here.
Do your research before listing it and if you can find the original box docs and tools it will add alot of value as a package.