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The Nassau class was a group of four dreadnought battleships built for the Imperial German Navy in the mid-1900s. The class comprised Nassau, Rheinland (pictured), Posen, and Westfalen. All four were laid down in mid-1907, and completed by late 1910. The battleships adopted a main battery of twelve 28 cm (11 in) guns in six twin-gun turrets. The ships served as II Division, I Battle Squadron of the High Seas Fleet for the duration of their careers. From 1910 to 1914, they participated in squadron exercises, training cruises, and fleet maneuvers. During World War I, the ships took part in operations intended to isolate and destroy parts of the numerically superior British Grand Fleet. These culminated in the Battle of Jutland in 1916, where the ships helped to sink HMS Black Prince, an armored cruiser. They also saw service in the Baltic Sea against the Russian Empire. After the war, all four ships were ceded to the Allied powers and broken up. (This article is part of a featured topic: Battleships of Germany.)
The Japanese government-issued Philippine peso was a fiat currency issued in the Philippines during World War II, by the occupying Japanese government. One of several examples of Japanese invasion money, the currency was issued in several denominations and was known by some Filipinos by the derogatory term "Mickey Mouse money". The effect of wartime hyperinflation towards the end of the war can be seen in the rapid increase of denomination values that were put into circulation. These thirteen banknotes were issued in ten denominations from one centavo to one thousand pesos by the Japanese government and are now part of the National Numismatic Collection at the Smithsonian Institution.
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![SMS Rheinland in 1910](http://upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Bundesarchiv_DVM_10_Bild-23-61-23,_Linienschiff_"SMS_Rheinland".jpg/440px-Bundesarchiv_DVM_10_Bild-23-61-23,_Linienschiff_"SMS_Rheinland".jpg)
