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Old 04-03-26 | 02:30 AM
  #22  
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Aardwolf
Wheelman
 
Joined: Aug 2021
Posts: 1,632
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From: Putney, London UK

Bikes: 1982 Holdsworth Avanti (531), 1961 Holdsworth Cyclone, 1953 Holdsworth Whirlwind

Originally Posted by bulgie
Did you look on the chainrings? They're on the back side, on the ones I've seen
Yep, Williams mark will be on the chainring:

50 tooth chainring, date code ZF

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