Originally Posted by lorica

repechage... Thank you very much for the extremely detailed information. You educated me, which was my goal in posting the request for help. I'll have to check the seat post binder to see what it is. I'm glad I know it's not campy so I don't improperly state the specs. I have the same issue with an early 1970s Schwinn Paramount -- the hole for the seat post binder is too small to accept a typical 8mm binder. I will probably end up buying one on eBay but first I want to verify what the original looked like.

One of the reasons I asked for help in dating the frame is that I saw a 1966 Cinelli SC on eBay that has the same color and decals but doesn't have holes in the lugs or chrome on the fork, seat stays or chain stays. The SN is 2717 with the bike above being 2485. I wondered if the bike might be older than 1972.
https://www.ebay.com/itm/11362358461...IAAOSw0TpcXFEz

The collector who owns the bike likes to make them as beautiful as possible even if everything isn't period correct. Many of his bikes have been repainted by either Brain Baylis or Joe Bell. On the frames I'm building out for him, he either gives me the parts he wants installed or tells me what he wants in the way of components, etc. and I source them. He's been collecting for over 45 years and has been quite successful when selling them or entering them in competitions.

My personal vintage bikes are comparatively cheap -- mostly Japanese, French and American framed bikes. I try to keep them original or period correct. I knew nothing about Italian frames before I met him and am on a steep learning curve.

Thank you for adding to my knowledge base.