⅔ Thaler - Paul Frederick

The two-thirds thaler denomination was a peculiarity of the North German monetary system, persisting well into the nineteenth century largely because it aligned with the Hamburg banco standard rather than the Prussian-dominated Conventionsthaler system. Mecklenburg-Schwerin clung to it longer than most. Paul Frederick's reign was brief — he died in 1842 after fewer than four years on the throne — making the production window for this type correspondingly narrow.

Kunzel 399 is the standard attribution for the type; collector interest tends to cluster around die variants documented within that reference rather than the KM listing.