National Day 1978 (Rustaq Fort)

This high-value stamp highlights Oman's deep-rooted political history, regional architecture, and territorial continuity by illustrating the majestic Rustaq Fort (Qal'at al-Rustaq). Nestled against the backdrop of the Al Hajar Mountains, this imposing pre-Islamic structure was extensively expanded during the Ya'aruba dynasty to serve as a strategic seat of power and national administration. The detailed illustration showcases the fort's formidable circular watchtowers and layered stone battlements, carrying a clear message of civic authority and cultural preservation. By showcasing this historic inland fortress alongside the sovereign portrait of Sultan Qaboos, the stamp beautifully integrates the ancestral leadership of Oman's interior with its modern civic progress.