FILE - The Dec. 12, 2010 file photo shows the gold coin 'Big Maple Leaf' in the Bode Museum in Berlin. The 100-kilogram (220 pound) gold coin disappeared from the museum. (Marcel Mettelsiefen/dpa via AP)

BERLIN (AP) — Berlin police say thieves broke into the German capital’s Bode Museum and made off with a massive 100-kilogram (221-pound) gold coin worth millions.

Spokesman Stefen Petersen said thieves apparently entered through a window about 3:30 a.m. Monday, broke into a cabinet where the “Big Maple Leaf” coin was kept, and escaped with it before police arrived.

A ladder was found by nearby railway tracks.

The three-centimeter (1.18-inch) thick coin, with a diameter of 53 centimeters (20.9 inches), has a face value of $1 million. By weight alone, however, it would be worth almost $4.5 million at market prices.

The museum says the coin is in the Guinness Book of Records for its purity of 999.99/1000 gold. It has a portrait of Queen Elizabeth II on one side and maple leaves on the other.