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2007 stamp commemorating 20 years of the Bulgarian Antarctic Expedition
Bulgaria liberated from the Ottoman Empire in 1878 although it remained de jure autonomous until the proclamation of full independence in 1908 but acted as de facto independent country since its restoration. From 1879 they issued stamps with Bulgarian Cyrillic and some of the stamps such as those issued in 1901 commemorated the 25th anniversary of the April Uprising against the Turks and in 1902 celebrated the 25th anniversary of the Battle of ShipkaBulgaria become de jure independent in 1908 although early stamps issued in the 1910s depicted TsarFerdinand and Tsar Boris III.