I'm guessing your gun to be from around 1933. The K22 "Outdoorsman" was introduced in 1931. Between 1931 and 1940 the s/n # were 632132 to 682419. The grips on your gun are from much later, after 1961. It looks to have good honest wear from lovable use. It appears to have been dry fires quite a bit. you may want to make sure the "peening" into the case head recess does not affect the shooting. These are nice guns as both shooters, and everyone needs one in their collection.

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H Richard
SWCA1967 SWHF244