Hello, I am looking at Campy catalog #18, which I was told was from 1984, 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?
-Dave Gordon
Los Angeles