10 Euros Isabella I of Castile

To mark the 250th anniversary of the Declaration of Independence of the United States of America, a series of collector coins is being issued. Under this theme, and reflected in the coin designs, the Spanish contribution to the success of the war in favour of the Thirteen American Colonies will be highlighted. Key figures such as King Charles III of Spain and the first President of the United States, George Washington, together with General Bernardo de Gálvez, Admiral Luis de Córdova and others, added to the enormous financial and logistical support provided by Spain, which took the form of huge sums of silver eight-real coins, the Spanish Milled Dollar, the origin of the first American dollar.

Charles III (20 January 1716 – 14 December 1788) was King of Spain from 1759 until his death in 1788. He was also Duke of Parma and Piacenza as Charles I (1731–1735), King of Naples as Charles VII and King of Sicily as Charles III (or V) (1735–1759). He was the fourth son of Philip V of Spain and the eldest son of Philip's second wife, Elisabeth Farnese. During his reign, Charles was a proponent of enlightened absolutism and regalism in Europe.

George Washington (February 22, 1732 – December 14, 1799) was a Founding Father and the first president of the United States, serving from 1789 to 1797. As commander of the Continental Army, Washington led Patriot forces to victory in the American Revolutionary War against the British Empire. He is commonly known as the Father of the Nation for his role in bringing about American independence.