Centenary of the Universal Postal Union (1874-1974) - 4 piastre

Issued in 1974, this stamp commemorates the 100th anniversary of the Universal Postal Union (UPU), founded in 1874 to facilitate international postal cooperation and establish a unified global postal network. The design incorporates the emblems of the UPU, the Arab Postal Union, and the Universal Postal Arab Federation, together with the Saudi national emblem. The issue celebrates a century of developments in international mail services and communication among nations.

By issuing this commemorative stamp, the Kingdom of Saudi Arabia joined postal administrations around the world in honoring the centenary of the Universal Postal Union. The issue highlighted the importance of postal services in connecting people, supporting commerce, and fostering international cooperation, while recognizing the contribution of regional and global postal organizations to the growth of efficient and reliable communications networks.