OK, it started life as a slightly different model from what I thought. .38 S&W is a different chambering from the more familiar .38 Special, and a few hundred thousand lend-lease guns were produced for Commonwealth countries in that caliber during WWII. With that serial number, your gun was produced in late 1941 or early 1942. It was undoubtedly converted to .22 LR after the war.
How does it shoot?
