This past Tuesday I walked into an area gun shop to do some window shopping. There in the case, are two pre-lock model 686's. One was a 3" and one was a 4". I asked to see them. First the 3" and then the 4", to my surprise both were marked CS 1. Both guns had the brushed or satin stainless finish. Neither gun had evidence of ever having the bead blast finish. I have a 4" CS 1, 2M stamped with the bead blast finish, so it left me wondering what is up? Both guns were mechanically pretty tight, but both had a number handling marks. 3" priced at $1499.99, 4" priced at $1199.99 This was guns only, no boxes. Thanks for all the information in this thread. I'm going to go back and get a more detailed look at these revolvers.