I don't know who was making the "big" decisions at Colnago 1980-83 but they goofed here and there.
The foil faux chrome chainstay decoration... can you say contempt for the buyer?
The COLNAGO stamping on the chainstay where it gets covered by the big ring... they did fix that eventually.
Maybe Ernesto got bored?
Mtb's were having a field day, I'm sure not a terrific time to be known for road bikes.
Yes, Colnago did try 26" wheeled off-road bikes... did not catch on.
about 1984, they were thinking again.