I have recently acquired a Model 29 Serial # S218XXX, It had K Frame Target grips from the 1980s when I struck the deal. So... the gun is around 90-95% with some muzzle wear, but all in all nice gun. I am wanting to confirm that I need "Cokes" or do I need Target Diamond Grips? I did not know there was a difference, so I am in full on learning mode. Also, from the serial number it looks to be a late 29. Thanks in advance for educating. (Not great pictures. I just took it out of a penatrating oil bath. It cleans up a lot better.) Blueing is really nice on the frame, barrel shows the wear.