Denier Bracteate - Mieszko the Younger Kalisz mint

Mieszko the Younger controlled the Kalisz district during a period of intense fragmentation across the Piast domains, and his brief tenure there — ending with his death in 1193 — produced a small, localized coinage that reflects how thoroughly decentralized minting authority had become in late twelfth-century Poland. Bracteates of this type were struck on thin, single-sided flans and circulated primarily within the immediate region rather than across duchy boundaries.

Kopicki 137 is among the rarer attributions in the bracteate series for Greater Poland. Surviving examples are almost invariably weakly struck toward the edges — a structural consequence of the bracteate flan, not die failure.