Obverse: ANTO.VEN.ERIO.DUX; kneeling doge with banner.
Star left, P right = Pietro Viaro, mintmaster for silver in Venice from May 30th to August 17th, 1385.
Reverse: S. MARCVS VENETI, nimbate Lion of St. Mark sitting left.
Scarce variety struck under a mintmaster who worked only over the course of a single summer.
Most of these issues have Star - F for his predecessor Filippo Barbarigo, but this coin shows a clear P in the right field.