Dukat elbląski - Jan II Kazimierz Waza Elbląg mint

Elbląg operated as a Polish royal mint under Swedish occupation for much of the mid-seventeenth century, which makes the resumption of coinage there under Jan II Kazimierz politically charged. These ducats were struck in the years immediately following the catastrophic Swedish invasion known as the Potop — the Deluge — a conflict that devastated the Polish-Lithuanian Commonwealth's treasury and population so severely that some historians estimate the country lost a third of its inhabitants. Restoring a functioning gold coinage at Elbląg was as much a statement of recovered authority as it was a fiscal act.

The Kop. 7137–7139 range indicates multiple die variants across the emission period, and collectors should treat date attribution carefully — the 1658–1663 span encompasses meaningful differences in die workmanship.