I'm no expert on brakes of this "era" but I happen to see an NOS set on a bike the other day. I think you are referring to Suntour Aero brakes. I didn't look carefully at the bike but it was Japanese (Nishiki?), new in an LBS and around $500 canadian if anyone wants me to make inquiries. Come to think of it the whole bike may have been one of those Aero oddities.
Sorry if this is outside the CR date timeline...I couldn't say.
Warren Young
Toronto
> These brakes must have been some kind of centerpull, but the center
>triangular section had a cover. This cover enclosed the mechanism so that
>you couldn't tell if the brakes were being activated by a central cable or
>maybe some kind of centerpull cam arrangement. These things were a real
>rarity, and you could go weeks in the 80's without spotting another set,
>usually on a super bike of aero pretensions. I kind of remember that they
>were some version of Shimano, as Shimano was doing very neat things in
>these years, (reference those platform pedals that had adjustable cleat
>length and lowered contact plates, plus they only fit into the special,
>Shimano crank arms.