5a. The obverse side of a Tian Qi Tong Bao (天啓通寶) 10 cash coin, cast during the reign of Emperor Tianqi (天啓) (1620-1627 AD), the 15th emperor of the Ming Dynasty. The reverse of this coin is features the Chine numeral '10' (Shi). There is a fine crack in the rim at the 2:00 O'clock position, but otherwise this is a good specimen. 44mm in size; 24 grams in weight. S-1221.