coins. Alternately then, these historians interpret Bugatto not as the designer of the portraiture of the coin, but as an official council as court portraitist to ensure that the likeness was close enough to Galeazzo to establish the coin as a cypher of rule. Some examples of the coin thought most likely to be the one Bugatto was involved survive to this day. The coin was minted out of solid gold with a small image of a young Duke Galeazzo in the middle surrounded by a 22 letter inscription. 1470 Sforza medals Of the ten medals Bugatto designed for the Sforzas, five held the portrait of Galeazzo and five held a portrait of Bona of Savoy. Records indicate that these medals were extremely expensive, almost life sized and made of solid gold; costing a nearly 10,000 ducats to make each. Together with Francesco da Mantova and Maffio Civate, the mould-maker and goldsmith respectively, Zanetto created the medals based on the likeness of the Duke and Duchess at that point. Records from the notary Lorenzo Costa at the Genoa mint in 1495, after the death of Galeazzo and exit of Bona indicate that Zanetto signed the back of at least one of the gold medals of Bona, accrediting the design of the portrait to him. None of these medals survive to today and what we know of them is from records of expenditures. Frescoes and Altarpieces Many of the account books from the court of Duke Galeazzo indicate that Bugatto was commissioned several times to collaborate on frescoes for several chapels in Milan and Pavia. Though none of Bugatto's frescoes remain and some of the ones he was commissioned to create never went past initial sketches, it is known frescoes were one of Bugatto's main forms of art. It is thought he may have specialized in creating donor figures, or smaller portraits of the patrons of a fresco who would be depicted in the larger work. In 1465, along with Giacomo da Lodi, he made estimates for the quality of the frescoes by Giacomo Vismara and the Zavattari for the presbytery of the church of San Vincenzo in Prato, Milan. In 1472 Bugatto was commissioned along with Bonifacio Bembo and Leonardo Ponzoni to create a series of frescoes for Santa Maria delle Grazie outside Vigevano where the ducal family were depicted among religious scenes. One of Bugatto's final works was a