According to Colnago catalogue, all their frames had only 2 top tube cable braze-onshttp://www.raydobbins.com/misc/Colnago_ ... atalog.htm
Yours got 3, and shape is different. Dunno man. Maybe one of its kind, or maybe just quite good replica.
Any serial numbers on rear dropouts?
I looked into this, early 70s nags had cable clamps, but could be ordered with braze ons, 2 or 3. I've seen plenty with 3, later they became standard 2 as opposed to a factory option.http://forum.tour-magazin.de/archive/in ... 58426.html
mine fits the 72 spec re fork / tangs / braze ons / seat stay fluted caps, etc.
Most of what we go on is based on the Bulgier scans, and most of these were produced for the US market,
This one with 3 guides has been nicely repainted and sold for $$$$$, very similar build / group.http://www.eroicacicli.com/forsale/bicy ... tografata/
Colnago Super, C record Delta 7v,
Olagnero Signature Model, DA 7401
Battaglin EL101 tubing 8v
Wilier Campagnolo 8v Record
Daccordi Furioso, Campag Veloce 9v