The coat of arms of Albania (Albanian: Stema e Republikës së Shqipërisë) is an adaptation of the Flag of Albania and is based on the symbols of Gjergj Kastrioti Skanderbeg. It features the black double-headed eagle, documented in official use since 1458, as evidenced from a sealed document uncovered in the Vatican Secret Archive (fund: Miscellanea, vol. XXXIX, doc. 2398), addressed to Pope Pius II and co-sealed by notary Johannes Borcius de Grillis. The stylized gold helmet is partially based on the model of crown-like rank that once belonged to Skanderbeg, currently on display at the Kunsthistorisches Museum in Vienna, first mentioned in 1593 in the Ambras armory inventory and depicted in 1601/03 in the 'Armamentarium Heroicum' of Jakob Schrenck von Notzing. The ruler of Austria, Ferdinand II, acquired the helmet from the Duke of Urbino, so mentioned in a letter sent to him from the duke, dated 15 October 1578. (Source: Wikipedia.org, CC BY-SA)