Daryl, I was looking at that gun today in the Infallible folder. It appears to be a C Grade, not a common find. No, that gun has not crossed my path although I am interested in competition guns of the early era, especially provenanced guns, regardless of whether or not they have aftermarket equipment. My Golcher-Linder pigeon gun not only has an Infallible trigger but is the only ten bore hammer gun I've seen with a beavertail forend. Many of these guns are "out there" but have been shunned by collectors and have probably been returned to the hunting field. Bill Murphy