Watch List notes:

FRANKISH GREECE AND THE ARCHIPELAGO:ACHAIA. UNCERTAIN 14th AND 15th CENTURY AEGEAN AREA ISSUES. Ducat in imitation of a Venetian issue of Michele Steno. St. Mark hands the ducal banner to the doge, three pellets above the Saint's head. Rv. Chr.ist in mandorla. Blundered legends on both sides. 3.48 g. Schlumb. -, Lunardi CS14.
Very fine

Ex Numismatik Lanz, München, Auktion 49, 23. 5. 1989, lot 1022.