Ort koronny - Sigismund III Vasa Bydgoszcz mint

The ort — worth a quarter taler — was introduced to Polish coinage in the early seventeenth century largely to address a chronic shortage of mid-denomination silver. Bydgoszcz (Bromberg) was one of the primary mints producing the type during Sigismund III's reign, a period when royal mint operations were frequently leased to private contractors whose quality controls varied considerably. That arrangement produced a wide spread of die work across the Kop#1267–1271 sequence, and attribution often hinges on subtle differences in the crown form and the arrangement of the king's titles in the legend.

Sigismund III's persistent wars — against Sweden, Muscovy, and the Ottoman frontier simultaneously at various points — kept demand for struck silver relentlessly high throughout this run.