Fred Rednor and Sam Bartelolmeo have it right. I've tried to make the comparison between classic car restoration and vintage bike restoration before. If one is to restore a vintage bike, it is (for all practical purposes) necessary at times to use reproduction parts. A restored bike does not have the same paint, decals or tires, for example. The original manufacturer no longer makes those items. Copies of or products similar to the original must be used to restore the bike or the car. If reproductions are not allowed then restoration in many cases becomes impossible. So buy the copy and enjoy the bike. Campagnolo could possibly bring suit out of simple orneriness but what is the point? They don't make the parts and don't intend to.
Paul Patzkowsky Longmont, Colorado