24 Mariengroschen - Max Gandolf von Kuenburg City of Goslar, Countermarked

Goslar's 24 Mariengroschen issues of this period circulated widely across the fragmented currency zones of the Holy Roman Empire, and Archbishop Max Gandolf von Kuenburg — who ruled Salzburg from 1668 until his death in 1687 — had them countermarked as a practical measure to authorize foreign silver for local circulation without striking new coinage. Salzburg's countermarking campaigns of the 1670s and 1680s reflect the archbishopric's chronic shortage of acceptable circulating silver rather than any formal monetary union.

The Zöttl reference places this among a documented series, but encountered examples vary considerably in countermark placement and strike quality — a predictable consequence of applying a hand stamp to already-struck coin.