Originally Posted by
Metacortex
I seriously doubt those stamped Campy drops were original to that frame, they were most likely replaced later. Schwinn had been using the forged Huret dropouts on the Superior and Super Sport long before the Sports Tourer, and that was a much more popular bike so those dropouts were plentiful at Schwinn. During '71 the Super Sport changed from forged to stamped dropouts sometime after the introduction of the Sports Tourer (I've seen them on Super Sports with frames dated as late as June '71). Finally, Schwinn didn't use those Campy dropouts on any other bike so it would be highly unlikely they would use them here.
Anything's possible, but it sure looks like the factory paint all the way back, with no signs of blending or repair. As a man trained in the art of blending paint, I know what to look for. It is a mystery though. I've never seen pictures of another like it, nor have I seen any stamped Campagnolo dropouts before. The frame guy thought at first they were forgeries. Maybe they were samples laying around?