Going to post this at auction, thought best to offer it to the S&W crew here first.
This is a ball detent modded yoke I pulled from a 629-3 should fit all N frames I would think, seems like a popular mod and functioned fine.
probably an expensive mod?
you get it for less than a I paid for a good used yoke I installed in the revolver.
$52.80 TYD includes DC#
Thanks Gents