1. Philatelic 72/167/7/24 Reference (shelfmark): Philatelic 72/167/7/24 Title: Oman Postage Stamp Issue: National Police Day Scope & Content: Stamps manufactured by Thomas De La Rue and Company Limited using a lithography printing process. Collection Area: Philatelic Collections Languages: English Date Range: 7 Feb 1981 Extent: 4 Items