Watch List notes:

THE ORDER OF ST. JOHN AT RHODES. ANTONIO FLUVIAN, 1421-1437. Ducat of Venetian type. St. John gives the banner of the order to the kneeling Grand Master, F. ANTONIVS / .S. M VENETI / DVX Rv. Chr.ist in mandorla, SIT. T. XPE. DATVS. Q TV - REGIS ISTE DVCAT. 3.50 g. Metc. -, Schlumb. -, Furse p. 76, Coll. Slocum -.
Very fine

This coin follows the Venetian pattern closely, naming St. Mark instead of St. John, and reproducing the meaningless title "Dux" instead of "Magister". Ex F. R. Künker, Osnabrück, Auktion 21, 16. 3. 1992, Nr. 1169.