Alas, the PO of my '89 must've damaged/destroyed the Sante RD; he'd swapped in something modern/cheap. Fortunately I had a Dura Ace from at least the right period:

The Sante is okay, sort of an acquired taste. Not a fan of the brakes, with the silly release button on the lever and no cam release on the caliper. And those hoods -- I so much as look at them and they start looking dirty. But I couldn't pass up the deal; this bike PLUS a wheelset with a 126 freewheel rear, made of Sun rims on absolutely buttery Phil hubs, for $100. This bike has turned out to be my best-fitting C&V full-on road bike.