1. Philatelic 72/140/3/36 Reference (shelfmark): Philatelic 72/140/3/36 Title: Socialist Republic of Vietnam Postage Stamp Issue: Philaserdica '79 International Stamp Exhibition, Sofia Scope & Content: Stamps designed by Trinh Kuoc Thu. Lithography printed by the State Printing Works, Hanoi. Collection Area: Philatelic Collections Languages: English Date Range: 27 May 1979 Extent: 2 Items