Old 10-16-12, 02:07 PM
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Location: Maidstone, Kent, England
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Bikes: 1970 Holdsworth Mistral, Vitus 979, Colnago Primavera, Corratec Hydracarbon, Massi MegaTeam, 1935 Claud Butler Super Velo, Carrera Virtuoso, Viner, 1953 Claud Butler Silver Jubilee, 1954 Holdsworth Typhoon, 1966 Claud Butler Olympic Road, 1982 Claud

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Originally Posted by carlfon View Post
hello sir ,
the frame number is N 24733 and punched near the seat post or top of the frame where the seat post fits
thank you,
carl fonseca
Then not a Claud Butler after all Carl, but almost certainly British and pre-1939 as vjp has pointed out. There were literally hundreds of small frame-builders in England during that period: every town had three or four craftsmen hand building high quality frames in tiny workshops, so unless someone else has, or has had, a similar frame, it's going to be difficult to trace it. The serial number might be a clue to its age, maybe the last two digits '33' mean 1933? Depends on the maker, they all used different systems. Try the British Isles section of this web site and look at the pictures and catalogues for clues: http://www.classicrendezvous.com/

Good luck, it's a really nice, interesting frame and should ride very well. My 1935 bike is both sporty and comfortable. Don't worry too much about fitting very old parts to it, just keep the build simple and don't alter/damage the frame in any way, so that if you do discover what it was like when new and can get the parts, you can then rebuild it that way if you want to. It's your bike, make it the way you like it - and please post pictures here, so we can all see!
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