yes it is repairable. Frank the Welder has a frame of mine at the moment. He is replacing the whole headtube.
I had a headtube replaced on a frame as well, a friend gets frames manufactured so he just stuck my frame in the hold when he was going over to Taiwan and asked the factory’s prototypers to do it while he was in a meeting. The cut the old head tube off, welded a new one on, put in the alightment table to straighten everything out, heat treated it, and aligned. By now the clear coat was totally fubar so it was sandblasted then joined the production like of a bunch or Birdy frames and was powder coated in Reise and Muller grey (lucky escape as the batches of frames before and after were being painted to look like new york chequer cabs). After powder coating it was re-aligned again. No small amount of work and given what I’d bought the frame for and it having no market value at all in any condition it wouldn’t have been worth doing
All done as a freebie which was nice, but it was no small amount of work and given what I’d bought the frame for and it having no market value at all in any condition, it wouldn’t have been worth paying to have it done.
After all that the frame was good as new, but striped and repainted and without its original decals and the like its just a frame, not my old bike reborn – ‘just’ a usable frame, not special in anyway other than it being a good fit for my gangly lanky bod. I still use it as a hack in fact (1999 frame repaired in 2006 I think)
But if a frames charm is its originality then it won’t seem very original after all that – finding an old frame that matches the components you have would result is something more authentic
That is some set of welds
I have to say the welds on mine aren’t so conspicuous, that said, in all likelihood it was getting repaired in the factory that built.