Denier - Matthias Corvinus

Matthias Corvinus used the denier series aggressively as a fiscal instrument during his early reign, flooding Hungary with small silver to finance his Black Army — the first standing mercenary force in Central European history. That army, funded in part through reformed royal revenues and a reorganized mint system, allowed him to operate independently of the nobility who had long controlled access to military manpower.

The ÉH#557 attribution places this among the earliest issues of his reign, struck within a year of his formal coronation in March 1464.