You 'may' have a good deal there
.
Somewhere here on the Forum is a copy of the original Lew Horton ad for the 624 3". The photo in post 2 and my bad memory seem to recall these had a K frame sized RB grip frame, important to know before shopping and easy to check if you have any K RB stocks to try on it (or if the ones that came with the gun are that style and fit well).