I have a police trade in 681-1 That I have owned for about five years. It is in excellent shape. It is stamped "GCCI" in the normal spot under the cylinder. I believe it is Gwynnet County Correctional Institution. Has the magnas that came with it which are also in excellent shape. I have maybe fired one box of 125 grain .357 through it in the time I've owned it.
I am looking to trade for a 64-5 or older snub nose. This would be for carry purposes, so I would be ok with a less than perfect (tongue planted firmly in cheek) revolver.
Will post pictures today sometime, but it is in really good shape with normal handling scuffs. Looks like it was barely holstered. Is has the M stamp in the yolk showing it was refit by S&W.
ETA: Added pictures. I apologize for the quality. I apparently am terrible at taking pictures in anything other than natural light.