A few things...

With the sloped crown it's on the later side of your range. Most de rosa fans prefer flat crowns and they didn't really use them that long a time. It could be a 128 rear...as well. I don't know that it's cold set. I'd guess 87-88 without being that up on the catalogs.

De Rosas didn't really have models at this point...they had track, road and that's really it. There were a few odd balls, like the aero one, but those are exceptions. Some call these stradas, some professionals...it's all the same thing. It's an SL De Rosa.

Those ti posts are very hard to find, quite valuable and really cool!