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Anyone good at identifying frames from serial numbers?

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  • September 13, 2014 at 4:28 pm #22365
    obutterwick

    I’ve recently bought a ‘De Rosa’ steel single speed but am fairly convinced it’s a re-spray. I have the serial numbers but can’t find the builder anywhere. Is there a guide anyone knows of?

    One number starts with CB (could it be a Claude Bulter??)

    The other starts with HBMS.

    Any help greatly appreciated.

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Viewing 11 replies - 1 through 11 (of 11 total)
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  • May 15, 2016 at 11:21 am #814081
    0
    BrownDog74

    Hi,

    Hi,

     

    I have an old cromo frame that I picked up recently second hand but I have no idea who the manufacturer is.

    The underside of the crank on the frame has a serial number Y4F4132.

    I’m guessing its Japanese or something? It’s quite a light frame though. Probably just over a kilo.

    Anyone have any ideas? No other markings are available.

     

    Cheers

    Glenn

    September 13, 2014 at 8:39 pm #814079
    0
    Gkam84

    Fire away, can’t do any harm
    Fire away, can’t do any harm if you have the pictures there.

    September 13, 2014 at 7:49 pm #814077
    0
    obutterwick

    ….I see the Olympics are
    ….I see the Olympics are generally lugged. Mine is brazed. Will email a few pics if it’ll help…

    September 13, 2014 at 7:47 pm #814075
    0
    obutterwick

    Gkam84 wrote:Now you have

    Gkam84 wrote:
    Now you have thrown me, going down the CB does lead your to Claud Butler, using the CB06 Adding the 01517 would lead me towards the Olympic model.

    Is it a vintage bike or fairly new?

    Adding Columbus takes me away from Claud’s all together

    I believe it’s new-ish. Have spoken to friends in ‘the business’ and it’s been sand-blasted and re-sprayed.

    September 13, 2014 at 6:52 pm #814073
    0
    Gkam84

    Now you have thrown me, going
    Now you have thrown me, going down the CB does lead your to Claud Butler, using the CB06 Adding the 01517 would lead me towards the Olympic model.

    Is it a vintage bike or fairly new?

    Adding Columbus takes me away from Claud’s all together

    September 13, 2014 at 6:25 pm #814071
    0
    obutterwick

    Gkam84 wrote:Are there any

    Gkam84 wrote:
    Are there any codes on the rear drop outs?

    But I have something to work with now, let me do a little digging

    Not that I can see. It’s Columbus, though. Really appreciate this – thanks!

    September 13, 2014 at 6:07 pm #814069
    0
    Gkam84

    Are there any codes on the
    Are there any codes on the rear drop outs?

    But I have something to work with now, let me do a little digging

    September 13, 2014 at 5:22 pm #814067
    0
    obutterwick

    therevokid wrote:and try on

    therevokid wrote:
    and try on retrobike’s road section if it’s of any age …

    Thanks, will take a look. No idea of age at all.

    September 13, 2014 at 5:20 pm #814065
    0
    obutterwick

    Thanks, Keith.
    CB06-M
    HBMS
    Thanks, Keith.

    CB06-M
    HBMS 01517

    Both under bottom bracket.

    Frame is very similar to a Charge Plug, if it helps.

    September 13, 2014 at 5:10 pm #814063
    0
    therevokid

    and try on retrobike’s road
    and try on retrobike’s road section if it’s of any age …

    September 13, 2014 at 5:05 pm #814061
    0
    Gkam84

    Stick up the full number
    Stick up the full number codes and where they are on the bike, there should be a couple of identifying marks.

    OR, take pictures and stick them up.

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