The People's Bank of China (PBC) issued a set of commemorative coins, one gold coin and one silver coin, for the Jian-10 fighter planes on May 29, 2007. They both are legal coins of the People's Republic of China. The design on the second side of the 0.33-ounce gold coin is a flying formation of the Jian-10 fighter planes with its denomination of 150 Yuan and the Chinese characters "China Jian-10 fighter plane," on it. The gold coin has a diameter of twenty-three millimetres.
The pattern on the second side of the one-ounce silver coin is an ascending Jian-10 fighter plane with its denomination and also the Chinese characters, "China Jian-10 fighter plane," on it. The silver coin has a diameter of 40 millimeters and its denomination is 10 Yuan.
The design on one side of both commemorative coins consist of China's national emblem, China's national title, and the year it was issued.
As PBC issued no more than 10, 000 and 20,000 for gold and sliver coins, respectively, and the purity of both precious metals used to make coins are 99.9%, they set to be worthy collectibles. link