Iwasgoodonce
Old School Grand Master
For touring I would say go for a powder coat. It will be cheaper and much more durable against the inevitable knocks and scrapes.
roadking":30sna0kd said:My original reply suggested the frame was late 70s.
Let's not confuse Carlton with the SBDU. Carlton Worksop bought by Raleigh in 1960, Worksop factory closed in 1981.
SBDU only built made to measure, no off-the-peg frames. Created in 1974 by Gerald O'Donovan in Ilkeston.
27.2mm doesn't guarantee 531 (it could be 531 and 27mm - there are butted and plain guage tubes in 531) and then there are other 531s - 531C, 531SL, 531Pro etc.
531 is a classic and superb tubeset, but a lot of mass produced frames and bikes in order to benefit from the halo of 531 often had only 531 main tubes: unless the sticker says"main tubes, stays and forks", then it only has 3 main tubes of 531 and then often only plain guage ones.
I ordered a new SBDU frame in the day (still have it) - a graduation present from my Dad and have two early Carltons (all 531 throughout).
This Carlton is good frame and should be preserved and used, but it is not an"exotic".
Hope this helps, cheers, Roadking.