I talked myself out of buying it. I am going to work on the Rossin I have instead. The seller is very responsive and I had some great dialog with him. It's a fascinating story and I love bikes with stories.
Here's what I found out: The bike is New Old Stock. That is why the cromovelato is in such good shape. It was brought to Argentina by Ocatavio Dazzan. Dazzan was born in Argentina but raced for Italy in the 1980 Olympics. The frame was a custom built frame by another ex-Olympian, Pettenella. Pettenella won gold in track at the 1964 games. He became a frame builder and knew he had to differentiate himself so he came up with the oval aero frames and patented them. He sold the patent to Colnago and was one of their master frame builders. The oval tubes required a high skill level so only certain frame builders were qualified. Anyway, when Dazzan retired he opened a shop in Argentina. He recently passed away and the bike shop is selling some of the old stuff.
It belongs in a museum. I am looking for something to ride and beat down. With shipping it was going to be around $1800 which still seems incredibly cheap to me