Chrome Rear Drops faces and right chainstay - I'd call this one on bulgier.net an '82ish... or maybe '83
your chainstay bridge - just like my very early '80...
mine also has no chrome, except for full chrome fork
if you want to see what 'Saronni Red' looks like, at least after aging for 29 years, lemme know
man, they had crappy paint jobs back in those years... surprisingly though, things didn't rust as badly as Reynolds 531 frames do. Must be something in the Columbus tube composition, or maybe just my sweat...
interesting...
from the guide posted above...
"1980 -- Fluted seat stay caps engraved COLNAGO and straight seat
stays (no longer biconical)
1980 -- Brake bridge with cast square boss for recessed brake bolt
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1981 -- Chain stay bridge is small spool shape (no longer tube)
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1982 -- Chain stays stamped COLNAGO on sides
1982 -- Cable routing on underside of bottom bracket"
mine, (bought new by me in mid-80 direct from distributor...)
has: biconical fluted seatstays engraved Colnago..., Brake Bridge with square boss, spool shaped chain bridge... >cable routing UNDER the BB<...
plain chainstays with 'chrome' film over the right chain stay...
like I said, there was no real set 'model' spec. just what they had on-hand at the moment the torch was lit.