Since Dagor77 has sold a 273mm f/6.8 Wide Field Graphic Raptar that covers 8x10 and another person has listed a 51mm f/4.5 Graphic Raptar, it would seem that use on a Speed or Crown Graphic would be ruled out. More likely is use in the graphic arts/copy business where perhaps the refinements and cost of the APO Raptar weren't called for. In the 1949 Wollensak Commercial catalog the lenses were still called just Raptar so adding Graphic could have been a post 1950 marketing ploy.