Denier litewski - Sigismund II Augustus Wilno mint

The Lithuanian denier occupies an awkward place in the monetary union that followed the Union of Lublin in 1569 — nominally integrated into a shared Polish-Lithuanian currency system, yet struck at Wilno with distinct Lithuanian heraldry and continuing on its own accounting track. Sigismund Augustus was the last Jagiellon, and the prolonged date range on these pieces reflects not continuous minting but the political difficulty of rationalizing two separate treasury systems under one crown.

The billon content of these small pieces declined progressively through the reign, a known degradation the Wilno mint pursued well ahead of any official authorization from the sejm.