Really, really nice mid-late 80's Dia Compe Gran Compe 500 brakeset. Long-ish 476-57mm reach.
Nutted, but can include a pair of Dia Compe recessed frame fittings that fill the recessed area to easily mount nutted brakes without changing anything.
These brakes have such light use that they can truly be called minty. Complete with wheel guides, excellent pads. Super clean, as the pics show.
$44 plus shipping. If you want them, my PPID is rccardr@cox.net
Thanks for looking!