1951 Aug.30 Airmail cover sent from Shanghai to USA, franked with complete sets C9, C10 original print and airmail stamps tied by Shanghai bilingual cds, one reverse with Canton transit marking. Sender H.C. Chen is a well-known philatelist and dealer who discovered the earliest known Large Dragon cover in 1944. 1951年8月30日上海寄美国航空封, 贴全套纪9、纪10、航1(1000圆3000圆5000圆各一枚)及改7(100圆), 销上海中英文日戳, 封背盖广州中转戳. 此封寄信人为发现最早大龙实寄封的上海邮商陈海忠. SEK0 (Image)

1955 Aug. 1 Beautifully illustrated airmail cover sent from Beijing to Leipzig DDR, franked on reverse with C32(2-2) and airmail stamp $5000 tied by Peking bilingual cda. Scarce mixed with old and new currency. 1955年8月1日北京寄东德莱比锡航空儿童图美术封, 封背纪32(2-2)及旧币航空票5000圆. 非常少见新旧币纪念票及航空票混贴封. SEK0 (Image)

1955 -56 C32 Sino - Soviet Treaty set franked on two domestic covers, one registered. 1955-56年纪32中苏友好同盟全套分别贴于2枚不同国内封, 一枚为挂号封. SEK0 (Image)

1957 C37 National Congress of CCP set franked on three domestic covers. 纪37第八届党代会全套分别贴于3枚不同国内封. SEK0 (Image)

1957 Airmail cover sent from Beijing to Sweden, franked with 16f C37 pair and 50f regular stamps, with arrival roller dater on reverse. Cover with a tear. 北京寄瑞典航空封，贴纪37党代会16分双连及普8伍角一枚，背有斯德哥尔摩机盖到达戳, 封有一裂痕. SEK0 (Image)

1957 Mi:349-53, SG:1722-26 40th Anniv. of Russian Revolution set on FDC issued by China Philatelic Company, unaddressed. 纪44十月革命40周年5枚全中国集邮公司首日封, 未实寄. SEK0 (Image)

1957 Mi:354-57, SG:1731-34 Harnessing The Yellow River set on FDC issued by China Philatelic Company, unaddressed. 特19治理黄河4枚全中国集邮公司首日封, 未实寄. SEK0 (Image)

1958 Illustrated airmail cover sent from Changchun to Moscow franked with set of S20 Africultural Co-operation and 52 airmail stamps, with arrival cds on reverse. 年长春寄莫斯科航空美术封, 贴全套特20农业合作化及航二52分, 背盖到达戳. SEK0 (Image)

1958 Mi:373-74, SG:1750-51 140th Birthday of Karl Marx set on FDC issued by China Philatelic Company, unaddressed. 纪46马克思诞生140周年2枚全中国集邮公司首日封, 未实寄. SEK0 (Image)

1958 Mi:379-82, SG:1756-59 Children set on FDC issued by China Philatelic Company, unaddressed. 特18儿童4枚全中国集邮公司首日封, 未实寄. SEK0 (Image)

1958 Mi:383-85, SG:1760-62 700th anniv. of Kuan Han-ching Dramatic Works set on FDC issued by China Philatelic Company, unaddressed. 纪50关汉卿戏剧创作700年3枚全中国集邮公司首日封, 未实寄. SEK0 (Image)

1958 Mi:390-91, SG:1767-68 Socialist Countries Postal Conference set on FDC issued by China Philatelic Company, unaddressed. 纪52社会主义国家邮电部长会议2枚全中国集邮公司首日封, 未实寄. SEK0 (Image)

1958 Mi:402-04, SG:1782-84 National Exhibition of Industry and Communication set on FDC issued by China Philatelic Company, unaddressed. 纪55全国工交展览会3枚全中国集邮公司首日封, 未实寄. SEK0 (Image)

1958 Mi:413-15, SG:1790-92 Return of Volunteers from Korea set on FDC issued by China Philatelic Company, unaddressed. 纪57志愿军凯旋归国3枚全中国集邮公司首日封, 未实寄. SEK0 (Image)

1958 Mi:420-21, SG:1797-98 1:st Atomic Reactor and Cyclotron set on FDC issued by China Philatelic Company, unaddressed. 特28第一个原子反应堆和回旋加速器2枚全中国集邮公司首日封, 未实寄. SEK0 (Image)

1959 Registered airmail cover sent from Beijing to Nanjing franked with set of C55 Industry Exhibition, with arrival cds alongside. 1959年北京寄南京航空挂号封, 贴全套纪55工业交通展览会, 旁盖到达戳. SEK0 (Image)

1959 -68 Two commercial covers sent from Beijing and Shanghai respectively to Amsterdam, both tied by red Postage Paid marking. 1959-68年两枚商业封分别从北京和上海寄往荷兰阿姆斯特丹，均盖红色邮资已付戳. SEK0 (Image)

1959 Jan.5 Airmail cover sent from Shanghai to Norway, franked with complete C57 stamps, all in two pairs and tied by Shanghai 24th Sub-office cds. Left part with address cut off. 1959年1月5日上海寄挪威航空封，贴纪57志愿军凯旋4套，分为2套双连，盖上海24支局戳. 左边地址被剪去. SEK0 (Image)

1959 May.28 Airmail cover sent from Guangdong Zhanjiang to Norway, franked with complete sets C37,C48, C52 and C53(3-1), tied by Guangdong Zhanjiang cds. Backside with large tear. 1959年5月28日广东湛江寄挪威航空封，贴全套纪37、纪48、纪52及纪53(3-1)，销广东湛江日戳. 封背有裂口. SEK0 (Image)

1959 Mar.16 Airmail cover sent from Guangzhou to Norway, franked with complete sets S21,S25 and C51(2-1), tied by Guangzhou Huangpu cds. 1959年3月16日广州寄挪威航空封，贴全套特21、特25及纪51(2-1)，销广州黄埔日戳. SEK0 (Image)

1959 Feb.19 Cover front sent from Guangzhou to Norway, franked with complete sets C33, C40, S14 and S16(4-1,4-4), tied by Guangzhou Huangpu cds. Plus a large piece with 8 S13 stamps. 1959年2月19日广州寄挪威航空封封面，贴全套纪33、纪40、特14及特16(4-1,4-4)，销广州黄埔日戳. 外加贴8枚特13剪片. SEK0 (Image)

1959 Mi:426-29, SG:1803-06 Paper-Cuts set on FDC issued by China Philatelic Company, unaddressed. 特30剪纸4枚全中国集邮公司首日封, 未实寄. SEK0 (Image)

1959 Mi:430-31, SG:1807-08 Steel Production 4f and 8f on FDC issued by China Philatelic Company, unaddressed. 纪58钢铁生产大跃进2枚中国集邮公司首日封, 未实寄. SEK0 (Image)

1959 Mi:433-34, SG:1010-11 Int. Women´s Day set on FDC sent from Beijing to London, with additional franking on reverse. 纪59国际三八妇女节2枚全中国集邮公司首日封北京航空实寄伦敦, 背加贴纪59(2-2). SEK0 (Image)

1959 Mi:441-43, SG:1818-20 International Labour Day set on FDC issued by China Philatelic Company, unaddressed. 纪61国际劳动节3枚全中国集邮公司首日封, 未实寄. SEK0 (Image)