I appreciate you sharing your knowledge and feel you are right. My dad even said it was a K frame 66 but those are stainless. So I am wondering what the numbers are that match the weapon. I would like to buy one just like the one my dad bought.Welcome to the forums from the cotton and peanut covered plains of the Wiregrass! Your have a K-22 Masterpiece Model 17 made in 1968. The model number and serial number stamped in the yoke cut are incorrect and irrelevant. S&W is known to mis-stamp various models and sometimes serials. The official serial is on the butt frame. Also, the Model 28 is an N frame with a shroud around the extractor rod. It is pretty clear there is not shroud and it is likely the frame is a K frame. So, I hope that clears everything up for you and others.