1978年J28M科大小全张新票1枚,变色,中上品。 China Peoples Republic Peoples Republic Issue 1949 - 2017 : 1974-2017 Issue 1978 (J25M) The National Science Conference miniature sheet, color faded and changed, please inspect, unmounted mint
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1978年J28M科大小全张新票1枚,变色,中上品。 China Peoples Republic Peoples Republic Issue 1949 - 2017 : 1974-2017 Issue 1978 (J25M) The National Science Conference miniature sheet, color faded and changed, please inspect, unmounted mint