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Hello Adam,
Regarding chainset -
Factory specification was for a NERVAR Sport cotterless steel set. Many examples were upgraded at the factory to a NERVAR Star set. A few were upgraded to a TA set. Have never seen one with a Stronglight set. Might be of interest to check the bottom bracket fittings to see who is their manufacturer.
Likely it represents a replacement so do not hesitate to change things out as required by your needs.
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Last edited by juvela; 05-01-17 at 01:08 PM.
Reason: spellin' & punctuatin'