I talked to a very respected framebuilder and he dismantled many framesets and told me that you could take any Colnago, stick it on the jig and all the angles and measurements would be perfect.
I'm lucky enough to have a 80s Super in SL and a 90s decor in CroMo,
They are both lovely rides, the Super is exceptional.
Colnago as well as De Rosa, Tommassini and a few other sell at a premium, from a collectors point of view one assumes that may continue, the market seems to have reach a decision over prices of certain models and thus buyers are more confident in handing over their cash for one of the above rather than a Rossin or Ciocc for example.
Gilco tubed Masters especially in small sizes can fetch a grand just for frame sets. Whether the forces responsible for driving these prices is set to remain steady only time will tell.
Colnago Super, C record Delta 7v,
Olagnero Signature Model, DA 7401
Battaglin EL101 tubing 8v
Wilier Campagnolo 8v Record
Daccordi Furioso, Campag Veloce 9v