From the ebay listing:
1977 Jack Taylor tandem; Reynolds 531 butted tubing. Original black paint w/box striping. Captain's size - 23 inch; Stoker's 22 inch. 21 speed, New Campy rear derailleur, new Suntour front derailleur, Shimano bar end shifters. 700C Mavic rims w/ Phil Wood hubs. Dia Compe brakes. Shimano disk brake on rear. Original Stronglight crank. Lots of other original equipment in place (lights, generator, retro aluminum fenders, racks) Sale includes original Campy Record derailleurs and additional Stronglight chainwheels. Condition: good. Includes normal dings and scratches. Rear lamp lens chipped. Wiring from generator to front and rear lights removed when bike wheels converted from 27 inch to 700 C.