I'll defer to ones more knowledgeable of later steel Colnagos, but I don't believe it is as described in the ad. I have never seen a steel Colnago that did not have seat stays tapered at each end and also have never seen them brazed into the lug like that. My knowledge of Colnagos past the mid 80s is scanty but I believe that they moved to straight fork blades very early in the 90s. So what year would this be? /