H&R topbreaks are some of the better quality low-price S&W competitors out there. They as well as Iver Johnson started producing pocket .32 and .38 topbreaks about the same time as S&W, so I don't know how much "knocking off" was involved.
They have lots of variations and their own fan community. If you want to get more specialized info on yours, register over at "The Firearms Forum" and post pictures, with all inscriptions visible and numbers readable, in the "Ask the Pros and What's it worth" section. That's where I got the info on non-S&W/Colt collectibles like Iver J., H&R, Hopkins&Allen, Forehand and such.