On August 15,1878 (the date of issuance has not been recorded so far. It is generally believed that the earliest date of issuance of Dalong stamps is from July 24 to August 1, 1878). The customs of the Qing Dynasty set up a trial post and issued the first set of Chinese stamps, Dalong stamps, totaling three stamps. The main picture is Panlong, the symbol of the Qing Dynasty.
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1878年清朝政府在北京、天津、上海、烟台和牛庄（营口）等五处设立邮政机构,附属于海关内,上海海关造册处当年即以蟠龙为图案印制了一套三枚邮票。邮票图案正中绘一条五爪蟠龙,衬以云彩水浪,邮票的颜色和面值不同,面值用银两计算：“一分银”(绿色,寄印刷品邮资)、“三分银”(红色,寄普通信函邮资)、“五分银”(桔黄色,寄挂号邮资)。这是中国发行的第一套邮票,集邮界习惯称其为“海关大龙 ”,简称“大龙邮票”。邮票上“大清邮政局”5个字十分醒目,图案中的“大龙”两目圆睁,腾云驾雾,呼之欲出。上方标有“CHINA(中国)”,下方标有“CANDARIN（S）(海关关平银 分银)”字样。
In 1878, the Qing government set up five postal offices in Beijing, Tianjin, Shanghai, Yantai and Niuzhuang (Yingkou), affiliated to the Customs. In that year, the Shanghai Customs Registry Office printed a set of three stamps with the design of Panlong. In the middle of the stamp pattern is a five-clawed dragon, which is lined with clouds and waves. The color and face value of the stamp are different. The face value of the stamp is calculated in silver pairs: "one silver" (green, postage for printed matter), "three silver" (red, postage for ordinary letters), "five pennies" (orange, postage for registered mail). This is the first set of stamps issued in China. The philatelic circles are used to call them "Customs Dragon ", or "Dragon Stamp" for short. The five words of "Daqing Post Office" on the stamp are very striking. The "dragon" in the design is wide-eyed and full of clouds and mists. Above it is marked "CHINA (China)" and below it is marked "CANDARIN (S) (Customs Bank Pension)".
The first official stamp issued in China was the Dragon Stamp. Before the issue, the Qing Customs designed three draft stamps, namely Yunlong, Pagoda and Wannianxiang, among which "Wannianxiang" is the most precious and valuable. Dalong stamps are thin paper dragon, broad-edged dragon and thick paper dragon.
Fu Qiang, an expert in the collection of Shenyang Shengjing Antique City, said that at that time, the circulation of Dalong stamps totaled 206,486,000 sets (source: History of Chinese Stamps, Catalogue of Stamps in Qing Dynasty)。 Because of the long history of the times, there were many comments on the value of different types and versions of the stamps in the collection market, for example, in the spring of 2008 in Jiade。 In the seasonal auction, there are three Dalong stamps, and the top and middle products are sold at 53。76 million yuan。