Watch List notes:

ITALY. Papal States. Clement X (Emilio Bonaventura Altieri), 1670-1676. Piastra (Silver, 42.5 mm, 31.98 g, 12 h), Rome, Anno IV and MDCLXXV = 1675. CLEMENS X · PONT · MAX · AN · IVB Capped bust of Clement X to right, wearing stola. Rev. DILIGIT · DNVS · PORTAS · SION / MDCL-XXV Portico of St. Peter's with pilgrims. Berman 2006. Muntoni 17. Good very fine.

From the Dr. Pelc Dens Sapientiae Collection, USA, ex Jackson's, 20 March 2002, 1335, and from the William R. Windsor collection.