4 Grote - Frederick August

Jever's late coinage history is inseparable from the succession disputes that repeatedly transferred the lordship between foreign rulers. By 1764, Jever was under the rule of Catherine the Great of Russia, inherited through the Anhalt-Zerbst line — making this issue a product of a tiny North Sea territory technically governed from St. Petersburg. The "Frederick August" attribution reflects not a ruling lord but the local administrative authority acting under Russian suzerainty.

Billon at .400 fine was standard for fractional issues in the smaller German lordships, where silver-short treasuries made full-silver small denominations impractical.