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 Andrea Dandolo. St. Mark hands the ducal banner to the doge, AZDR DAZDV / S M VENETI / DVX Rv. Chr.ist in mandorla, blundered legend. 3.54 g. Schlumb. Tf. XII, 34, Ives XIII, 1 var., Lunardi CS6.
Extremely fine

Ex Numismatik Lanz, München, Auktion 49, 23. 5. 1989, lot 1015.