Thank you juvela. That makes much more sense.

Couple other points. Where I could also be wrong. The Velo-Retro Cinelli timeline says the wolf ear lugs were phased out 1959-60. This bike definitely has the wolf ear lugs. The rear dropouts photograph as rather short for dropouts that old. Any other opinions out there? Would Campy have kept the hole for newer, shorter drops? Or am I just seeing the photo wrong?

The timeline also says the binder bolt I had on my '73 disappeared in '72. There are errors and there are oddities.

Also in summer '73, talking to Andre Cinelli about the shop order for S.C. bikes, I asked about B models. He said definitely no more would be made. But he did have some in inventory. Odd sizes, odd colors. Some, he said, had been there for years. Thinking if no one in the world had wanted them for years they might not be good for store inventory, I declined. Mistake.