I sure don't know the details, but it's a good question for the experts on the CR list (or the guys here who know the straight p**p). I would point out that pantographing was seldom done by either the component mfgrs. or the frame builders, it was often farmed out to a shop with a pantograph engraving machine, and such a shop did all sorts of brands. It could also be done on older parts, so the graphics and the component might not "match" as expected.