A massive gold coin issued by the Royal Canadian Mint has been stolen from a museum in Germany.
Police in Berlin say thieves broke into the German capital's Bode Museum before dawn Monday and made off with the 100-kilogram gold coin worth millions of dollars.
The ``Big Maple Leaf'' coin, which is three centimetres thick with a diameter of 53 centimetres, has a portrait of the Queen on one side and maple leaves on the other.
The museum, which has one of the largest coin collections in the world, said on its website that coin has been on loan in its numismatic collection since 2010.
It was issued by the Royal Canadian Mint in 2007 and it is in the Guinness Book of Records for its purity of 999.99/1000 gold.
Royal Canadian Mint spokesman Alex Reeves says the coin does not belong to the mint and the owner is unknown.