Zweier - Frederick V Vienna

Frederick V — better known as Frederick III, Holy Roman Emperor — ruled Austria during a period of near-constant fiscal pressure, dynastic crisis, and military threat from Matthias Corvinus of Hungary, who actually seized Vienna itself in 1485 and held it until his death in 1490. Small silver issues like this Zweier were the workhorses of everyday commerce throughout that turbulent occupation and its aftermath, changing hands in a city under foreign control.