From the Ebay listing for this frame:
"1975 Jack Taylor / Campagnolo Tandem Bicycle. Marathon model built with 531 Reynolds butted tubes. Frame is marked 6853 Bev. Campagnolo. Appears to be one of 175 limited edition bike built by Jack Taylor that year. Has 27" wheels, SGDG front and rear hubs with brakes. Rims are marked Super Champion, made in France. Both pedal assemblies and pedals are also marked Campagnolo. Handlebars are marked: Mod. Giro D' Italia, front yoke marked Cinelli Malano. Seat post is also marked Campagolo. Paint is original yellow, but faded from the years."
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