During 1871-1918 Germany was the united empire. But at the same time, a several German countries retained a part of their own independence: 1. Three Free Cities: Hamburg, Bremen & Lubeck. 2. Five principalities: Lippe-Detmold, Reuss-Obergreiz, Shaumburg-Lippe, Schwarzburg-Sonderhausen & Waldeck-Pyrmont. 3. Five duchies: Anhalt-Dessau, Brunswick-Wolfenbuttel, Saxe-Altenburg, Saxe-Coburg-Gotha & Saxe-Meiningen. 4. Six grand duchies: Baden, Hesse-Darmstadt, Mecklenburg-Schwerin, Mecklenburg-Strelitz, Oldenburg & Saxe-Weimar-Eisenach. 5. Four kingdoms: Bavaria, Prussia, Saxony & Wurttemberg. Sum: 23 independent states into the German Empire.
All of that states minted own coins which circulated in the whole German Empire. It was the next coins: 2, 3, 5, 10 & 20 mark. I have a several of them.
Kingdom of Bavaria. 3 mark 1910, silver .900, 16,667 g., mintage - 1496000. Otto. 5 mark 1908, silver .900, 27,777 g., mintage - 537000. Otto.
Kingdom of Bavaria. 5 mark 1876, silver .900, 27,777 g., mintage - 1130000. Ludwig II the "Swan King".
Hamburg. 3 mark 1909, silver .900, 16,667 g., mintage - 1389000. 5 mark 1907, silver .900, 27,777 g., mintage - 326000.
Kingdom of Prussia. 2 mark 1901, silver .900, 11,111 g., mintage - 2600000. Wilhelm II. "200 years - Kingdom of Prussia". 2 mark 1913, silver .900, 11,111 g., mintage - 1500000. Wilhelm II. "25th year of reign".
Kingdom of Prussia. 2 mark 1913, silver .900, 11,111 g., mintage - 1500000. Wilhelm II. "100 Years - Defeat of Napoleon".
Kingdom of Prussia. 3 mark 1911, silver .900, 16,667 g., mintage - 400000. Wilhelm II. "Breslau University".
Kingdom of Prussia. 3 mark 1913, silver .900, 16,667 g., mintage - 2000000. Wilhelm II. "100 Years - Defeat of Napoleon".
Kingdom of Prussia. 3 mark 1913, silver .900, 16,667 g., mintage - 2000000. Wilhelm II. "25th year of reign". 3 mark 1914, silver .900, 16,667 g., mintage - 2564000. Wilhelm II.
Grand Duchy of Saxe-Weimar-Eisenach. 3 mark 1910, silver .900, 16,667 g., mintage - 133000. Wilhelm Ernst.
Kingdom of Saxony. 3 mark 1913, silver .900, 16,667 g., mintage - 1000000. Friedrich August III. "Battle of Leipzig centennial".