Please tell me where the world's largest stamp was produced, and the year and manufacturer of production. By the way, tell me something about stamps. Thank you.

There are several versions of the world's largest stamp.

The first statement is the express mail stamp issued by China Daqing Post at 1905 (above, with pictures in the link). The stamp is 2 1 cm long and 6.5 cm wide (area 136.5 cm2). As you can see from the picture, there are four stamps, and the one on the far right is called "send and receive", which is stamped with the sender's receipt. The leftmost one is the stub sent to the post office. The middle two stamps are attached to the letter and sent. After delivery to the destination post office, the back will be stamped with the landing stamp, including the face value stamp, which will be kept by the post office. A copy with "receipt certificate" written on it is signed by the recipient and brought back by the postman, and finally sent back to the post office for future reference.

The design of the stamp is a flying dragon. In the picture above, the dragon's head is down, which is called "Bow Dragon". 1907, changed to "Toulong". After the Republic of China, the design was changed to "flying goose", with a slightly different size and five couplets.

It is said that this kind of express mail stamp, as the largest stamp, has been listed in Guinness World Records for many years.

There is also a saying, which is also introduced in most articles at present, that the largest stamp in the world was issued by Marshall Islands on 1979. The stamp is16cm long and1cm wide (area176cm2) with a face value of 75 cents. The pattern is an island map. According to Scott's catalogue: "1979 has two kinds of unofficial stamps, one is a set of five stamps to commemorate the establishment of the government in May 1979. The face value is 8c, 15c, 2 1c, 3 1c, 75c. Among them, 75c is about the size of a postcard ... ". But there is no map in the catalogue, and I can't find it online. Does informal issuance count?

Another way of saying it is the1000th stamp in Slania, with a stamp size of 6x8. 1cm (with an area of 48.6cm2). Obviously, the area is not as large as the above two kinds, but it is undoubtedly the largest engraving stamp in the world.

References:

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