I have a Stronglight 99 double 42/52 with 170 cranks and a choice of 3 different pattern outer rings. I believe that the 99 immediately preceded the 100 and was the same in all respects except for cranks profile. No corrosion and no excessive wear on teeth.
Rushed photo here.
if I understand correctly the 100 is the MTB version of the 80, both of which followed on from 99, which had bcd of 86 and all the rings are interchangeable, I have a 99 (from new in 1980s) and a 100 double, and looking for some triple bolts if anyone has any ?