The People's Bank of China will issue four commemorative coins today: for the Shanghai World Expo, 2010 New Year, "Harmony" calligraphy series and environmental protection series. Each series will have one coin issued. The denomination of the Shanghai World Expo commemorative coin is 1 yuan, with a diameter of 25 mm, made of nickel-plated steel, and a total of 60 million coins will be issued. The denomination of the 2010 New Year commemorative coin is 1 yuan, with a diameter of 25 mm, made of brass alloy, and a total of 30 million coins will be issued. The "Harmony" calligraphy and environmental protection commemorative coins both have a denomination of 1 yuan, with diameters of 25 mm, made of brass alloy, and each has a total of 10 million coins to be issued. To ensure that each district or county has an exchange point,...
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