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London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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@SideshowBob
BB picture and info from cardre.org
Left side of BB gives model and generally the size
7x=size 57 and Corsa Extra model. The frame is 57ctc square.
Right side of BB gives year of production
A =86/87
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