I blame Daryl and Stephanie for this.
While at the range, I spotted this little fellow, and decided that I needed another K Frame to match my 10-5. Plus, I was not super attached to the CZ P07 I happened to have.
Viola!
SN is K 120XXX, which seems to me to indicate an early 50's pre-Model 15 (feel free to add any info).
I haven't shot it yet, but will do a report next week.