Pizza Bob
Member
I think that Alan has it right. It would have been a standard, open-back, Hogue monogrip, but with the S&W logo rather than Hogue's. The grip that CH4 shows is the "Tamer" grip, with a closed back and an elastomer cushion at the top as was used on the hyper-magnum X-frames (but will fit K/L & N RB frames). If you are sensitive to recoil, while not original to your gun, that is the one to have.
Adios,
Pizza Bob
Adios,
Pizza Bob