1. Philatelic 72/141/1/7 Reference (shelfmark): Philatelic 72/141/1/7 Title: Socialist Republic of Vietnam Postage Stamp Issue: Appearance of Halley's Comet Scope & Content: Lithography printed stamps manufactured by the National Printing Works, Havana. Collection Area: Philatelic Collections Languages: English Date Range: 24 Feb 1986 Extent: 4 Items