1 Testone - Carlo V

Carlo V assumed direct control of Milan in 1535 following the death of Francesco II Sforza, the last Sforza duke, who died without an heir. Rather than appoint a new duke, Carlo absorbed the duchy into the Habsburg imperial system as a fief governed by appointed Spanish governors — a administrative shift that would define northern Italian politics for the next 170 years. The testone was the prestige silver denomination of the period, and Milan's output under Carlo served partly to establish Habsburg monetary authority over one of Europe's most commercially active cities.

The MIR 284 attribution covers several die variants across the two-decade emission window.