<Li> Qian Feng Quan Bao (Chinese: 乾 封 泉 寶; pinyin: qiān fēng quán bǎo) are made of iron . According to the histories, because there was much lead and iron in Hunan, Ma Yin took the advice of his minister Gao Yu to cast lead and iron coins at Changsha in 925 . One of these was worth ten copper cash, and their circulation was confined to Changsha . Merchants traded in these coins, to the benefit of the State . In 2000, a hoard of over 3,000 of these coins was found near Changsha . Extremely rare bronze specimens are also known . </Li> <Li> Qian Yuan zhong bao (Chinese: 乾 元 重 寶; pinyin: qiān yuán zhòng bǎo) bear an inscription that is also found on Tang coins . This small lead coin is thought to have been issued by the Chu kingdom . Similar bronze coins are sometimes attributed to Ma Yin, but could be funerary items . </Li> <Ul> <Li> Da Shu tong bao (Great Shu currency) (Chinese: 大 蜀 通 寶; pinyin: dà shǔ tōng bǎo) are attributed to Meng Zhixiang when he became Emperor Gao Zu of Shu in Chengdu in 934 . He died three months later . Despite its rarity, some say this coin continued to be cast by his son, Meng Chang, until 937 . </Li> <Li> Guang Zheng tong bao (Chinese: 廣 政通 寶; pinyin: guǎng zhèngtōng bǎo) are made of bronze and iron . The bronze coins were cast by Meng Chang from the beginning of this period, 938 . In 956, iron coins began to be cast to cover additional military expenses . They circulated until 963 . </Li> </Ul> <Li> Da Shu tong bao (Great Shu currency) (Chinese: 大 蜀 通 寶; pinyin: dà shǔ tōng bǎo) are attributed to Meng Zhixiang when he became Emperor Gao Zu of Shu in Chengdu in 934 . He died three months later . Despite its rarity, some say this coin continued to be cast by his son, Meng Chang, until 937 . </Li>

Who were the first king to issue coins bearing their names