1971 - 1981, mint never hinged lot, as well better issues like Michel no. 1399 / 1408 (2) \"horses\", 1565 / 80 \"paintings from Qi Baishi\", 1582 / 89 \"face masks the Beijing Opera\" and 1647 / 50 (2) \"scientist of the Chinese Middle Ages, high quality lot in 5 gift booklets