I have a number of auctions up on ebay right now for period-correct items. Most are Campagnolo 50th anniversary gruppo components (I do not have the complete gruppo). All of these components are in extrememly good shape: used just enough not to make you feel bad about fitting them to a bike you plan to ride but not enough to preclude you fitting them to a show bike.
You can see an overview of the auctions by going here:
there are:
50th anniversary rear derailleur 50th anniversary 170 cranks 50th anniversary toe clips 50th anniversary shift levers 50th anniversary Q/R skewers 50th anniversary brakeset 50th anniversary pedals (identical to super record with titanium spindles)
Campagnolo chain guide for cambio corsa or cambio paris-roubaix equipped bikes, or for bikes with single chainrings.
Lastly, a pair of Selle Italia Storika saddles that their maker proposed as retro (KOF?)
Steven Maasland
Moorestown, NJ
USA