1990 China Gold Proof Panda 5 Coin Set With Box. 1990 China Gold Panda Proof. 999 Gold Five Coin Set. This set of gold coins issued by the People’s Bank of China is legal tender and includes a 1 oz. 100-Yuan coin, a 1/2 oz. 50-Yuan coin, a 1/4 oz. 25-Yuan coin, a 1/10 oz. 10-Yuan coin and a 1/20 oz. All the coins have the Temple of Heaven to the obverse and a panda bear on the reverse. The coins are housed in a lacquered rosewood box.