1. Philatelic 72/167/7/57 Reference (shelfmark): Philatelic 72/167/7/57 Title: Oman Postage Stamp Issue: Sixth Supreme Council Session of Gulf Co-Operation Council, Muscat Scope & Content: Stamp manufactured by Imprimerie Courvoisier SA, Switzerland using a photogravure printing process. Collection Area: Philatelic Collections Languages: English Date Range: 3 Nov 1985 Extent: 1 Item