I have seen a picture or two on the net of Taurus 66 (non vented rib .357 magnum), but can't find any part number or listings of a scope mount base for Taurus 66 models. I have read that there were two types (old old model, and newer model). I think the cutoff year is 89 or something. But can't find a blurb anwhere as to what company made the mount. Any part number would be appreciated too. Funny how you can find a mount for a Ruger Security six which hasn't been made for 30 years or so very easy, but such trouble finding one for a Taurus 66???