This is a Pachmayr Compact Pro known as the Grip, model 3254.
Pachmayr's Compac grips are made from a specially formulated black rubber compound and are designed to maintain concealability. Although compact in design" Compac grips still give a shooter total control. Compac grips provide a secure" non-slip finish.
Features:
Black finish
Compact Grip
Classic styling
Deep checkered finish
Designed to help you point straight
Fits S&W J frame round butt w/open backstrap