from the ebay listing for this bicycle:
This is a very nice Classic Jack Taylor curved tube 531 Reynolds butted tube. Cinelli handle bars(need new tape cover), gears are on the handle bars. Campy breaks, hubs, deraileur, and crank. Nice concor saddle. Needs new tires. This bike has just a few scratches and no rust! I am not sure how to measure the curved tube. The top tube is 58.4cm c-c. The head tube is 17cm t-b not including the head sets. All measurements are approximate. The serial #6914 on the back drop out area.