Watch List notes:

ITALY, Milan, Gian Galeazzo Maria Sforza (Duke of Milan) Ludovico Maria Sforza VI (1481-1494), silver testone, (9.22 g), head of St. Ambrose as the mintmark, obv. IOGZ M SF VICECOMES DVX MIL SX, armoured bust to right of G. Galeazzo Maria, rev. head of St. Ambrose mintmark, quadripartite quartered eagle and snake Visconti arms, surmounted by two crests crowned, one of ornate crested dragon devouring a child to right, on left a winged dragon with old man's head encircling claws in a diamond ring, globule between the crests, around LV PATRVO GVBNANTE, (CNI 32, Crippa 4, Morosini 9, MIR 222, Biaggi 1570). Very fine/nearly very fine, with roughness at top of reverse, very rare.

Ex Tom May Collection and Noble Numismatics Sale 99 (lot 2735).

See illustration of this coin in the paper 'A Renaissance Moment' published in the Australasian Coin and Banknote, April 2008, p45. An extremely fine example in the NAC Auction 81 (lot 337), 30th November 2014, realised 15,000+ Euros.