1. Philatelic 72/140/3/73 Reference (shelfmark): Philatelic 72/140/3/73 Title: Socialist Republic of Vietnam Postage Stamp Issue: One Thousand Three Hundredth Anniversary of the Bulgarian State Scope & Content: Stamps designed by Trinh Quoc Thu. Manufactured by the State Printing Works, Hanoi using a lithography printing process. Collection Area: Philatelic Collections Languages: English Date Range: 7 May 1982 Extent: 3 Items