Does the fork crown have star cutouts? But like Nob said it should have the star cutout on the BB.
The bike looks like a 78-81 Viner Special Professional, but I've never seen that type of decals.
From what I've seen Viner did only a few different models in three "price ranges" Course, Corsa and Professional.
The cheaper ones were called Viner Special Course and had no star cutouts and were build with lesser tubing and had cheaper components. There were Course strada and pista models, but at some point they also made a step-through version of the strada.
The Course strada was build with most likely Columbus Zeta and later in the 80s with Columbus Aelle Tretubi, these had custom sticker that looked like the typical Columbus sticker that read "tubi speciali in acciaio, made in Italy".
The Course pista was build with Reynolds 531 and maybe some Columbus tubing.
Next in line was the Corsa models. These had cross (x) cutouts and were build with Reynolds 531. I don't know about the components these had and I think these were made only in the 70s.
The high-end models were called Special Professional and there were again both strada and pista models. These had star cutouts and sometimes seat stays were engraved with "Viner". These were build with Columbus SL (maybe SP) and later SLX etc. high-end tubing and usually had Campagnolo components.
