I have a older .22 smith & wesson that i purchased used in 1975 and would like to know its model number/ designation , production date and any thing else you might be able to tell me. Its serial number " K 2017## " is stamped on both the butt and rear of the cylinder. Yet on the frame and yoke are the numbers 26510 with an "A" above and a "3" below the numbers on the frame. The guy I bought it from at the time said he thought it was a .22/32 Kit Gun and i just assumed it was a K-22. Can any one help. Thanks