Siam Royal Siamese Postal Dept. Officially Sealed Label, Red, Imperforate

Thailand · 1883 · None

This is an imperforate official seal from the Royal Siamese Postal Department, printed in red. The label features ornate typography in Thai script and was used to seal official mail, ensuring its integrity during transit. These labels are a key part of Siam's early postal history, representing the formalization of the mail system under King Chulalongkorn.

Issued shortly after Siam joined the Universal Postal Union in 1885, these official seals were part of the modernization of the kingdom's postal services during the reign of King Rama V (Chulalongkorn).