You can find Campy Super Record low-flange hubs in 126 mm rear spacing on Ebay nearly every week. These are some of the best rolling and best finished hubs of any, even compared to today's products. Campy was just crazy about bearing quality.

Try to get the skewers with the hubs. Even better is to get a set of tubular wheels with 32 or 36 holes with Campagnolo hubs. Very few people are buying these wheels now, and you will probably get a great and complete set of Campy hubs for less $$ than the hubs and rims seperately, and likely less than the hubs alone.