Obverse legend : WILHELM DEUTSCHER KAISER KÖNIG V. PREUSSEN.
Obverse description : Tête nue de Guillaume Ier à droite ; au-dessous, C.
Obverse translation : (Guillaume empereur d'Allemagne, roi de Prusse).
Reverse legend : DEUTSCHES - REICH (FEUILLE DE CHÊNE)/ 20 - M./ 1873.
Reverse description : Aigle impériale couronnée, timbrée d'un écu orné d'une aigle, entouré du collier de l'ordre allemand.
Reverse translation : (Empire allemand).
GERMANY - KINGDOM OF PRUSSIA - GUILLAUME I
William I was the second son of Frederick William III and brother of Frederick William IV. It is regent for his brother since 1856 when he succeeded him in 1861. He married Augusta of Saxe-Weimar whom he has two children Frederick III. With his minister Otto von Bismarck, he will achieve German unity. The Austro-Prussian War of 1866 with the victory of the Sadowa rid of Austria and strengthens the Confederation of North Germany. The war started against France in 1870 will lead him by the Treaty of Frankfurt, Alsace and Lorraine May 10, 1871. January 28, 1871, he was crowned emperor of Germany in the Hall of Mirrors of Versailles. Payment of compensation 5 billion gold francs paid by France will allow him to succeed his monetary reform based on the gold standard. Bismarck remained Prime Minister of Prussia and imposes its views on foreign policy: isolation of France, alliance with Italy, Austria and Russia. The Congress of Berlin allows Germany to pose as arbiter of Europe and to build a colonial empire in Africa, Asia and Oceania. William I died in 1888 nonagenarian.