I have an old S&W top break in .38S&W. The barrel is 3 1/4 " and the SN is 139185 stamped on the handle. The grips are hard black rubber, w/ S&W insignia stamped on them. The nembers stamped on the break head are the same. Does anyone know how to dtermine the date of manufacture? Is it a rare model? Probably not. It is a 5 shot model, in fairly decent shape. Any help would be appreciated.