There are two different ebay auctions offering the Campy Hi-Lo rear hub, one as a set and the other, just the rear hub. The lone hub is advertised as "early 70's" even though it has a curved skewer. The set of hubs states that it has the "correct" straight skewers. I looked in the Campy catalogs to see when these particular items appeared and I can only find them showing up in the 1982 catalog with a notation "only available in English thread and 5 speed spacing". Question:, when were these hubs introduced?
David Goerndt