Could very easily been built by myself in the Coventry Eagle/ British Eagle/Barry Hoban (clements)Factory in Wales 80's. All lugs, drop outs are what we used. But i have to add that most frame builders at the time were using the same. if the seat tube is 27.2 and it was built in Wales its 531 tubing. I have a low profile in the attic with the exact same colours that i built and sprayed 85ish. ps they must of been short of short point seat tube lugs at the time as it is different to the head tubes lol