Thailand Postage Due Stamp, 1905

Thailand · 1905 · 1 Att

This is Thailand's first postage due stamp, featuring a simple yet functional design. The denomination '1 Att' is prominently displayed in the center, surrounded by ornate scrollwork and Thai script. The design's primary purpose was to indicate the amount of postage owed by the recipient.

Issued during the reign of King Chulalongkorn (Rama V), this stamp marks the formalization of collecting unpaid postage in Siam, reflecting the modernization of the country's postal system.