Groat 'with Monogram' - William III of Bavaria

William III ruled Hainaut jointly with his mother Margaret of Constantinople's line until consolidating authority in the 1350s, and his coinage reflects the administrative effort to distinguish his issues from those of his predecessors through the addition of a personal monogram — a device borrowed from chancery practice rather than numismatic tradition. The long date range suggests this type was struck across multiple die generations, and survivors show considerable variation in flan quality consistent with a county mint operating under intermittent fiscal pressure during the Hundred Years' War's disruption of regional trade networks.