Campagnolo has now re-issued pads for the vintage Record brakes. I wish they would re-issue more parts (like friggin' brake lever hoods and cables/housing for the old brakes and ders., maybe?) but I think their lawyers have stopped them from doing so.
Anyways, you can get fresh, Campagnolo-branded pads for the old Campag. Record brakes now, fwiw, for about $30/set of four....