Marty Kozicki was the Campy rep. I spoke with - he's a very nice guy. He returned my calls promptly, researched the aforementioned ID of the derailleur / part number and called me back right away. I had no idea that there were so many variations on this theme - there's a similar derailleur on eBay right now that is slightly different from the one I have pictured - selling in England - currently over $200.00. They call it a C-Record, but I'm confused by that description - did the C-Record derailleurs evolve over time?