CLB Compact Professionel, with special self centering springs. They will look perfect on any C&V French bike from the 80's as on my Vitus Plus Carbone in the pic. Performance is just adequate because of the small pad area and it's small size (lesser lever advntage). I installed these with CLB's aluminum cased brake cables..... They made the braking performance just marginal at best because the cable casings compress so much...... don't do it!
Including this in my brakeset grail list mostly just for its ultra "weight weenieness" which is a big deal for some, and very nice aesthetics.....