Watch List notes:

ITALY, Milano (Duchi). Gian Galeazzo Visconti. 1395-1402. AR Grosso (24mm, 2.41 g, 10h). Coiled serpent flanked by G-3; all within quadrilobe / S. Ambrosio seated facing, holding flagellum and crozierS. Ambrosio seated facing, holding flagellum and crozier. Cf. CNI V 4/5 (obv./rev.); Crippa 4/a; Biaggi 1475. VF, deposits.

From the collection of a Texas Wine Doctor. Ex Classical Numismatic Review 18.3 (1993 Third Quarter), no. 484.