snipped: "Or do they just use old artwork in the catalogs as someone mentioned?"
yeah - check the archives. this subject has been
debated extensively; the same line-art was used
almost until the record 180 era.
anf on page 43, it shows the Campy chainrings labeled with "PATENT" rather than the familiar "BREV" Campagnolo. Do I have the date wrong on this catalog? Or do they just use old artwork in the catalogs as someone mentioned? When did they change from Patent to Brev on the Campy chainrings and is the catalog a valid way of determining anything? Do they have no hole, 3-hole and 4 hole Campy SR front deraillers? And if so when?