1. Philatelic 72/167/7/78 Reference (shelfmark): Philatelic 72/167/7/78 Title: Oman Postage Stamp Issue: National Day, Agriculture Year Scope & Content: Stamps designed by Mohammed bin Nizam Shah. Manufactured by Harrison and Sons Limited using a lithography printing process. Collection Area: Philatelic Collections Languages: English Date Range: 18 Nov 1988 Extent: 2 Items