Here’s a very early production Smith & Wesson Model 651 revolver.Only the first 902 revolvers made had an “R” serial number prefix. Gun is built on j frame with 4” barrel chambered in .22 magnum (.22 wmr). Gun has adjustable rear sight. Gun has factory wood grips. Has original box with it. Very nice gun. $1250 You don’t see many of the R serial number for sale In Tyler might consider trades