The archives suggest that the forgings were made by SR:
DTSHIFTER@aol.com wrote: Mitch,
I don't know for a fact, but I suspect Stronglight. Stronglight did make Mavic's bottom bracket assemblies (even with the "unobtainable" bearings as Mavic asked!), so I would think they might have been asked to do the cranksets as well. I have been told by a few people that Stronglight did make the Mavic 630 ('Starfish') crank which were 130mm bcd.
Chuck Brooks Malta, NY NEUSA NA
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