need to check what frame will allow. I have 30mm tubular in my 5800 105 brakes but there are a number of Tecktro and Shimano dual pivot that will allow 32mm

I checked and the chainstays are 34mm at the tire so 28 to 30mm would be about the limit.

Well, sight unseen, I can't say, but I probably would want a turn if it were a frame size I could ride (say, 60 to 62 cm ctt), and undamaged (structurally) for the most part. I have quite a few projects waiting their turn, though. But it's a pretty good bet that quite a few people would want a turn, even if conditions are different. That being said, the place to offer items for sale within this forum is the "Classic and Vintage Sales" subforum.

Top of the TT to center of the BB = 59cm and the only damage is to the paint. I haven't seen this vintage Serotta frame for sale but the later ones that I have seen for sale to my mind don't go for that much and are likely more desirable. I expect that refinishing with ancillary services will cost as much or more than what I could buy another frame for. I'm not trying to and have no desire to make a museum piece. To my mind this is nothing more than a canvas to paint on. A really nice canvas made by a really cool and nice guy who happens to have become an icon of the frame building business. I don't want to change that, just add some personal touches that you might not approve of but I'm certain he would not care one whit about. There are 55,000 Serotta frames and the vast majority of them not made personally by Ben Serotta. BTW (BS XXX) stamped on the steerer tube is a model number not a serial number this one and numerous others are stamped BS 256. Which translates to the Club Series frame set. I doubt he made every frame and fork personally for every bike to come out of his factory at almost any time. I am the second owner of this frame which I bought from a guy I'm not going to name here who was part of Toga bike shop NYC from the beginning and then moved to NC to start another bike shop here (not in Apex). This had been his personal frame set and not for more than a few years. I bought it in 78 or 79 and have had it since. I rode it until 89 and it's been collecting dust in my garage ever since. I have a warm fondness for it and what it represents from my past and I would like to rekindle some of that before it's too late for me. So, no I'm not trying to sell it! However I am a pragmatist and if someone wants to make a museum piece out of a bike frame with a rich history, fine I will part with it. Otherwise, I will continue to love and care for it in my own way.

In light of the narrow spacing between the chain stays, I think symmetrical dual pivot caliper brakes will probably be best. I can still use 28mm tubeless tires which for my purposes should perform as well as tubeulars and be much easier to repair on the road and at home.

As Fahrenheit531 aptly said (before dissuading) in the first reply: "It's your bike. Do what you will." You came asking for opinions, and you've gotten some. Don't get mad if everyone is not totally supportive. I didn't suggest that you refinish the bike, or do a slavish museum restoration -- I simply observed that your notion to radically change it, in a way that might risk its viability and identity, is beyond the sort of thing I would do; that your desiderata and your starting materials are perhaps not mutually compatible. We've seen "worse", of course, but in general the spirit of this place is about the forum's title: Classic and Vintage. Still, folks here are fairly tolerant and heterodox within that common sentiment. Soldier on.