Stralsund in Pomerania, 1806 AD., Gustav IV Adolf of Sweden, 3 Pfenninge, KM 422.

Pommern, Gustav IV Adolf von Schweden, Münzstätte Stralsund, 1806 AD.,
3 Pfenninge (22 mm / 2,68 g), Prägung 384.000 Stück,
Obv.: K. S. P. L. M. , (Königlich Schwedische Pommersche Land-Münze) , crowned griffin standing on baseline covered with vegetation, holding sword to l. - gekrönter Greif steht mit Schwert n.l. auf bewachsener Grundlinie.
Rev.: 3 / PFEN / NINGE / 1806 , value (number between rosettes) and year - Wertangabe und Jahr, Zahl oben zwischen Rosetten.
KM 422 .

from wikipedia: Following the death of Bogislaw XIV, Duke of Pomerania without issue in 1637, control was disputed between Sweden and Brandenburg-Prussia - which had previously held reversion to the Duchy. The Peace of Westphalia in 1648 enforced a partition into a Hither or Western and a Further or Eastern Pomerania. The exact frontier was decided in the Treaty of Stettin (1653). Sweden received Hither or Western Pomerania with Stettin (Swedish Pomerania). Farther Pomerania passed to Brandenburg-Prussia. In the negotiations between France, Brandenburg, and Sweden following the Northern War the Brandenburg diplomats Joachim Friedrich von Blumenthal and his son Christoph Caspar obtained the rights of succession for Brandenburg, though the argument with Sweden, especially over Hither Pomerania, continued to the end of the 17th century and beyond, until the Treaty of Stockholm in 1720. Stettin and Western Pomerania up to the Peene river (Altvorpommern) became part of Brandenberg-Prussia following the end of the Great Northern War in 1720.
Western Pomerania north of the Peene river (Neuvorpommern) remained a dominion of the Swedish Crown from 1648 until 1815.

After Prussia lost the Battle of Jena-Auerstedt in late 1806, French troops marched north into the Pomeranian province. Fortified Stettin surrendered without battle, and the province became occupied by the French forces. Only fortified Kolberg resisted, and the French laid a siege in March 1807. Ferdinand von Schill was among the defendants. The siege was not successful and was lifted only when Prussia surrendered to Napoleon Bonaparte in the Peace of Tilsit on July 2.
Napoleonic occupation also thwarted Gustav IV Adolf of Sweden's plans to construct a fortified port city on Rügen, Gustavia. Constructions had begun in 1806, but the unfinished town was levelled by the French forces already in the following year.
The terms of surrender included high war contributions (25,000,000 Taler from the Province of Pomerania alone). The agreed on withdrawal of the French troops was delayed repeatedly. In November 1808, the French troops left the province except for Stettin, which forced the provincial government to move to Stargard in 1809. The Kriegs- und Domänenkammer was renamed Royal-Prussian government ("Königlich Preußische Regierung").
In 1812, French troops invaded Swedish Pomerania, and also occupied Prussian Pomerania again. The Prussian troops took quarter in Kolberg. After Ludwig Yorck von Wartenburg, who commanded a Prussian corps with a significant Pomeranian share, had left the coalition with France in the Convention of Tauroggen of December 30, 1812, the Prussian military called the Pomeranians to arms in February 1813. Also in February, Russian troops reached Farther Pomerania. In March, all French forces left Pomerania, except for Stettin, which was held by the French until December 5, 1813. After the war, Prussia after diplomatic efforts of Karl August von Hardenberg in the Congress of Vienna gained Swedish Pomerania by paying 2,6 million Taler to Denmark and granting her the Duchy of Lauenburg, and paying an additional 3,5 million Taler to Sweden on June 7, 1815. On October 23, Swedish Pomerania was merged into the Prussian province, both now constituting the Province of Pomerania.
After Napoleon's break-up of the Holy Roman Empire in 1806, the Western Part was the member of the German Confederation. After foundation of the German Empire of 1871, the whole of Pomerania was included into the newly created state.