And guess what? It had the TSD logo stamped into the rear brake bridge block. I owned a San Cristobal from the very late 70's or very early 80's (and most definitely earlier than the one you posted pics of) with a clamp on front derailleur, and the older graphics with the non-flying "C." It had the "C" that someone here has I think referred to as the Cincinnati Reds "C," which gives you the idea. People will tend to downplay the TSD connection, possibly because it makes the bikes seem less "Italian." but I have news for you, Ciocc's only started coming into the US in the very late 70's, and TSD was in the picture very early on.
Is that a fair assessment or is that overblown?It makes no sense to me, personally. It seems to me that some people look down on the TSD era of these bikes. If this is early to mid 80's as most of you suggest, would that make it a TSD unit and would that put it in a time frame where the quality or value of the line was becoming less.