Watch List notes:

Sperandio of Mantua (c. 1425-1504), Camilla Sforza (widow of Costanzo Sforza), bronze medal, bust three-quarters left wearing widow's veil, rev., SIC ITVR AD ASTRA, a female figure seated on a seat composed of the foreparts of a unicorn and a hound; signed below, OPVS SPERANDEI, 83.2 mm (Hill 399; Arm. I, 74, 43; Pollard 90 = Kress 130; Bargello 114), pierced and with second attempted piercing, a very fine early cast. Ex Leu 74, Zurich, 19-21 October 1998, lot 725. The inscription on the reverse ("this is the way to the stars") is from Virgil's Aeneid, Book IX, 64. Sperandio's design must have been influenced by the reverse of one of Matteo de' Pasti's medals of Sigismondo Malatesta showing Fortitude on a seat formed of foreparts of elephants; here the unicorn and hound represent Chastity and Fidelity.
Estimate: 1500-2000 GBP