designed of the Sforzas as presents for Gonzaga. When he traveled to Gonzaga, Bugatto met Andrea Mantegna in Mantua. It is thought that Bugatto would have studied Mategna's frescos and portraits at the Camera degli Sposi in the Palazzo Ducale, Mantua. Historians hypothesize there would have been a mix of competition and respect between the two artists, but no records detailing how their interaction went exist. Works Detailed records of expenditures, receipts, and letters from the Duke Galeazzo Sforza and the many people of his court remain today. From these records, much is known about the art commissioned by Galeazzo Sforza and thus the art of Zanetto Bugatto even if most of Bugatto's art no longer remains today. In modern times only one verified work of Bugatto remains, Portrait of Galeazzo Maria Sforza which currently resides in the Castello Sforzesco. Some historians argue that a second work, the portrait of Galeazzo Sforza on the ducal coins of 1467, can be credited to Bugatto as well, however there is still debate over the true source of this work. 1467 Ducats of Galeazzo Sforza During the late 1460s Duke Galeazzo Maria Sforza was going through a series of financial difficulties. Despite this, Sforza wanted to leave a powerful legacy as Duke of Milan and set about commissioning a new set of ducal coins with his likeness. In a letter from the master of the Milanese mint dated to 4 March 1467 Zanetto Bugatto is mentioned as having been commissioned to be involved with this series of ducats. The letter asks the duke for the lettering to be used for the new coins as the master of the mint was concerned they would not be able to finish the minting in time for the Duke's investiture on 15 March. In this letter the master of mint mentions the design of his likeness being finished after meeting with a committee of artists including Bugatto and the engraver. There is some debate however among art historians as to which of two surviving coins this letter is referring to, or if Bugatto was even the artist of either of these coins at all. Some historians point out that the portrait of the Duke on both coins lacks certain Flemish influences from Rogier that were key in Bugatto's works. They use this lack of influence to argue that another unnamed artist actually created the portraiture of the