National Day 1978 (Al Jalali Fort)

This definitive issue focuses on Oman's maritime defense networks, architectural heritage, and historical sovereignty by featuring a striking view of Al Jalali Fort (Qal'at al-Jalali) perched atop a rugged volcanic cliff overlooking the Sea of Oman. Originally built during the 16th-century Portuguese occupation and later recaptured and expanded by Omani forces, the fortress guards the historic harbor entrance of Old Muscat. The scene conveys a strong message of territorial integrity and historical endurance, using the battlements to symbolize the protection of the Sultanate’s coastline. Flanked by the portrait of Sultan Qaboos, the stamp proudly anchors contemporary administrative and defense institutions within the nation's multi-century maritime legacy.