庆元背七铁钱铸年考辨张建华南宋庆元年号仅行六年，但同安、蕲春、汉阳三监铸造的庆元通宝小平拆二铁钱背文记年都有作“七”者，记年虽不符实，却属真品无疑。其铸造年代，前贤考为相当庆元七年的嘉泰元年（１２０１年），之所以仍用庆元年号，并记年作“七”，据析是改... Qingyuan back seven iron cast year test Zhang Jianhua Southern Song Qingyuan year line only six years, but the Tongan, Hunchun, Hanyang three supervisors of the Qingyuan Tongbao Xiaoping two ironback texts have “seven” Who, though not consistent with the Chronology, but it is true no doubt. The casting of the era, the predecessor was considered a very Qingyuan seven years of Jiatai the first year (1201), the reason is still used Qingyuan year, and record year as “seven”, according to the analysis is to change ...