Ferdinand II Uniface Klippe 6 Taler 1621 NGC XF-40, Breslau mint, 23.70g. The Bohemian Revolt, the first of several anti-Habsburg rebellions that led to the Thirty Years’ War, was defeated in 1620. Forced to make peace, the participating Silesian insurgents paid their debts to the Holy Roman Empire, besieging several Talers in a now Polish city of Glogau. The present example is part of that emergency issuance and represents an apparently scarcer denomination than its 3 Taler counterpart. The central stamp is flanked at the corners of the Klippe by two smaller stamps, 4/M and ZP, monograms of mint officials Matthaus Jachtmann and Zacharias Petzold.