I have an Old World Leather belt-slide thumb break, size 49 that I purchased for a Slick&Wesson Mod 4046. Sold the gun about 2 months ago, but kept the holster because my CZ copy Witness fits it like a glove. I didn't spend that much for it, and it's been a great piece of leather so far.
------------------
Tom Whitman
SSgt, USAF