Britain's Queen Elizabeth Marks 60 Years on Throne
Britain's Queen Elizabeth marks a major milestone Monday, kicking off diamond jubilee festivities celebrating her 60 years on the throne.

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The King's Troop Royal Horse Artillery fires a forty-one gun salute in central London February 6, 2012, marking the sixtieth anniversary of the Queen's ascension to the throne. (REUTERS)

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Britain's Queen Elizabeth on her Sandringham Estate in Norfolk, eastern England February 3, 2012. (REUTERS)