The collections, its diversity, and size are considered a wealth of heritage and a historical reference for Arabia.
Group includes
212,000 stamps (oldest since 1867)
5,000 documents (oldest since 1865)
120,000 manuscripts and books
أغسطس 1951م
مغلف
مغلف جوي، مغلف مسجل ختم بريد مسجل
طابع جوي 1949م
م28.08.1951 = 25.11.1370 هـ