QianYuan Zhong Bao coins were issued during the reign of Emperor SuZong (AD756 - 762). The coins were generally very well made with thick outer rim and beautifully casted inscriptions; "Qian Yuan Zhong Bao" on the obverse. Different denominations, all bearing the same inscriptions on the obverse; 1 cash (abt 25mm), 10 cash (abt 30mm), 50 cash (abt 35mm) in different sizes were issued. Some have plain reverse while other have "crescent", "cloud", "circle", "dot" on the reverse.