Trojak / 3 Grosze - Sigismund III Vasa Bydgoszcz, Lewart arms, B mint mark

The Bydgoszcz mint operated under lease arrangements throughout much of Sigismund III's reign, with minting rights periodically farmed out to private contractors who were expected to meet weight and fineness standards they had every financial incentive to quietly ignore. The trojak — three grosze — was the workhorse denomination of Commonwealth daily commerce, and Bydgoszcz production during these four years was substantial enough that die varieties proliferate across surviving examples.

The Lewart arms appearing here reflect Sigismund's dynastic connection to the Vasa house, incorporated into the royal arms after his Swedish succession claim of 1587. That claim remained actively contested through this entire period, with Sweden and the Commonwealth in intermittent conflict over it well into the following century.