Portugał koronny - Sigismund III Vasa Bydgoszcz mint

The "portugał" denomination — a Polish adaptation of the Portuguese 10-cruzado piece — entered the Commonwealth's monetary vocabulary as a prestige strike rather than a coin intended for daily exchange. Sigismund III ordered these heavy gold multiples primarily as diplomatic gifts and royal donatives, distributed at court ceremonies and to foreign envoys. They circulated by prestige, not pocket.

The Bydgoszcz mint operated under lease to private mintmasters throughout much of Sigismund's reign, a common arrangement that occasionally introduced quality inconsistencies across gold issues. Kop. 1429 represents one of the rarer documented varieties from this facility for this denomination.