元代至正通宝一组3枚，包括折二，背蒙汉文，折三，背蒙汉文，及背十，分别评中乾80，72及80，折三带深绿绿銹，至正通宝由元朝末年的第20代蒙古大汗妥坤帖木儿於公元 1333-1370 年（北元 1368-70 年）在同名时期发行。China: Yuan Dynasty, Zhi Zheng Tong Bao, (1271-1368), lot of 3 coins, 2 cash, 28.1x1.9mm, 5.5g and 3 cash, 35.5x2.3mm, 13.2g, rev: Er (Two) and San (Three) in both Phags-pa and Chinese script, also, 10 cash, 44.7x3.7mm, 23.2g, rev: Ten in Phags-pa script only, graded Zhong Qian 80, 72 and repsectively. Deep jade green patina on the 3 cash. Zhi Zheng Tong Bao was issued during the era of the same name (1341-1370) by Toghon Temur, r.1333-1370 (1368-70 as Northern Yuan) in the waning years of the Yuan Dynasty. . (3). [159-161]
