Postage Stamps and Postal History of the People's Republic of China

1967 (Apr 20) China Philatelic Company first day of issued covers with complete set of W1 stamps, - both sent by printed matter airmail to France and Argentina. Very rare to be cancelled as April 20th (1st Day of Issue for W1 Stamps). Also, very rare during cultural revolution period, for first day w-series cover to be sent to very far and unique South America destination (Argentina). VF-F.
1967年4月20日中国集邮公司寄出的文1全套票首日封，分别航空印刷品寄法国与阿根廷，中国集邮公司寄出的文1全套封多销次日即4月21日日戳，4月20日的首日封极罕少，实寄南美洲者更是十分难得。上品。