International Hydrological Decade (1965-1974) - 4 piastre

Issued in 1973, this stamp commemorates the 54th World Rover Moot, an international gathering of senior members of the Scout Movement, held in Mecca, Saudi Arabia. The design features the official Rover Moot emblem alongside a view of a mosque in Mecca, symbolizing fellowship, service, leadership, and international friendship among Scouts from different countries. Rover Moots provide opportunities for cultural exchange, personal development, and cooperation among young adults participating in Scouting activities.

By issuing this commemorative stamp, the Kingdom of Saudi Arabia celebrated the values of the Scout Movement and its contribution to youth development. The issue highlighted the importance of leadership, community service, and international understanding, while emphasizing the role of Scouting in fostering responsible citizenship and cooperation among young people from around the world.