I would agree with Bob on the comparison. Flex is the closest you'll get to a ciba and looks great when compared to other RA4 materials, but it isn't a Ciba.

Meanwhile, a search of the web and FujiFilm comes up without any substance. It wouldn't be a surprise to me if Bob is correct that this is an Ra4 material. Which could mean they pulled the name 'vibachrome' out of their ***.

Oddly enough, I'll be calling Duggal tomorrow regarding some work and if I can remember I'll ask...