Picked up what was supposed to be a k-38. 5 digit s/n 40xxx. 6" bbl. Can't see a model designation on the frame, just the s/n and a
"1" stamped on the side of the butt towards the rear and s/n towards the front. Also a "1" stamped on the frame at the front of the yoke. Gun is in about 90%, great blue, but had some cheap plastic grips for a right handed person.
Any idea on mfg date?