The collections, its diversity, and size are considered a wealth of heritage and a historical reference for Arabia.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
1996
وثيقة
أول تقويم إسلامي في ألمانيا، الإصدار الثاني
1996 = 1417 هـ