I'm curious about the Nervar Sport COTTERLESS steel crank, like this one currently for sale bt CyclArt:
Although it isn't specified, I think this crank used the same 128 BCD as the 5-arm alloy Nervar Star. Anyone know when this steel crank was introduced and how long it was sold? Also, when newly introduced, was this considered a high end crank worthy of the top bikes of the era?
Regards,
Jerry Moos