Oldenburg is an independent city (157,267 inhabitants in 2011) in the state of Lower Saxony, Germany. During the French annexation (1811–1813) in the wake of the Napoleonic war against Britain, it was also known as Le Vieux-Bourg in French. The city is situated at the Rivers Hunte and Haaren. The city is the place of origin of the House of Oldenburg. Before the end of the German Empire (1918), it was the administrative centre and residence of the monarchs of Oldenburg.
Postmark in Unified-Germany
Postmark in British Zone
Postmark in German Empire
Postmark in North German Confederation
Since 1 January 1868.