Watch List notes:

LORDSHIP OF CHIOS. FILIPPO MARIA VISCONTI, 1421-1436. Ducat of Venetian type. St. Peter gives a banner to the kneeling duke, .D. MEDIOLANI / .S. PETRVS. / DVX Rv. Chr.ist in mandorla, the right line of 5 stars begins and ends with a pellet, .SIT. T. XPE DAT Q TV - REGS ISTE. DVCA. 3.53 g. Schl. XIV, 14, Lambros 50. Small edge fault.
Extremely fine

Ex Lanz Numismatik, München, Auktion 49, 23. 5. 1989, lot 1029.