I may have to eat a little crow here, as there may be at least one Colnago tandem floating around....

I decided to do a little more back-checking and was able to find some photos taken inside the Colnago building back in 2006 by a visitor and, son-of-a-gun, there's one sitting in there that looks identical, right down to the bubblegum welds that you find on Kinesis-built tandem frames of that vintage.

http://www.honda-tech.com/showpost.p...05&postcount=4

And, back in 2007 one of these tandems, complete with the stand, was sold at Auction for 10.350 Euro (about $14k USD) Lot 152

http://www.rmauctions.com/AuctionRes...=2&Collection=

http://www.rmauctions.com/CarDetails...52&Currency=US

Now, as to how one of those things goes from selling at auction for $14k to $35k, that's beyond me, and it's definitely an aluminum frame... not composite per the Ebay ad.