Okay - I've found the images, but have lost the original websites and supporting text: still, might be of some use.
The pics in the album below are a mix of built bikes, framesets and old team photos. You might be able to drag the images into google to find the original websites?http://imageshack.us/g/1/10038932/
If I were pushed, I'd say it was a late 80's team bike that found it's way into private hands. 3 possible scenarios spring to mind:
1. it was a team training bike or 'spare' that is in original simple paint and bears the scars of its successive owners.
2. It was a 'proper' liveried team bike with a specific (SB?) rider. Following its pro life, it was repaired and/ or resprayed and then had another life in which it received its dingdent. (For the record, I think that this is just wear and tear damage rather than an attempt at cold setting the rear dropout spacing. It didn't affect the ride when I had it.)
3. It was an off-the-peg, publicly-available Rossin Prestige that has been unimaginatively resprayed and well used.
The difference in bottle bosses might indicate a change of tube at some stage, but if memory serves, if you look in the bb shell you can still see the 'pegs' that were used to pin the frame together prior to brazing. As far as I know, this is usually a sign that a frame was put together properly in one pass (but I'm not a framebuilder: others will be able to confirm or disabuse this notion).
So, you could either decide on which pro team you think it was most likely to have been used by and refurb it in their livery.
Stabilise the paint asis and build it up as a high quality survivor.
Choose a nice scheme that you like, and go with that: replacing and repairing as you see fit.
The first choice is the most exciting, but hard to research, and there is always the nagging feeling that if you don't know for sure what the bike history is, you are 'dressing it in borrowed robes'.
The second has a nice simplicity but the paint damage now is a bit severe.
The third is perhaps the wisest: if you look at the pics in the album, there are some cracking deep hued colours with chrome that suit (and the frame isn't that light that a few bits of chrome would upset it)
It really is a fab frame that I regret letting go.