find a serial number on the BB shell and google for the Cinelli serial number DB. you should be able to date it this way.
It is number 6129. I have found a 59xx which is 1960, and a 70xx which is 1964. That leads me to think it's 1961'ish
@kiwifraser started
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It is number 6129. I have found a 59xx which is 1960, and a 70xx which is 1964. That leads me to think it's 1961'ish