I recently acquired a former bicycle mechanic's stash of mostly late 70's-mid 80's French parts. Upon sorting through all this stuff, I've found some pairs of Mafac brake levers, some with black plastic and a pair that's all aluminum (presumably the hoods are to be added?). I'm planning on saving most of the pieces for that "perfect" French frame. My question is: which Mafac brake levers are the "better" pair? If anyone has any general advice about ID-ing the different levels of Mafac parts, ie; like Campy SR & NR differences, it would be greatly appreciated!