On Guy Apple's Cinelli Registry, it says the to tube cable guides were introduced in 72/73.
Plus, notice there is a brazed on water bottle boss on the DT (73/74).
Now since this was repainted by Cycle Art 20 yers ago, maybe those things were added.
But, looking at his site for a pattern, I can find no reason the numbers are assigned, not by size, not by year.
Baffled.
__________________
"Leave the gun. Take the Colnagos."
Last edited by Robvolz; 07-11-23 at 08:49 PM.