Armed Forces Day - 11 December 1991 - 100 baisa

Issued in 1991, this stamp commemorates Armed Forces Day, observed annually on 11 December in the Sultanate of Oman. The design features a portrait of Sultan Qaboos bin Said, surrounded by symbols of the Omani military, including a fighter aircraft, naval vessel, artillery equipment, and other branches of the armed forces. The imagery reflects the modernization and development of Oman's military institutions during the reign of Sultan Qaboos.

By issuing this commemorative stamp, the Sultanate of Oman honored the service and dedication of its armed forces. The issue celebrated the role of the military in safeguarding national security, protecting sovereignty, and contributing to the country's stability and development. It also highlighted the modernization of Oman's defense capabilities and the importance of military service to the nation.