1. Philatelic 72/222/1/28 Reference (shelfmark): Philatelic 72/222/1/28 Title: Siam (Thailand) Postage Stamp Issue: Seventh Anniversary of the Constitution and National Day (1st Series) Scope & Content: Stamps manufactured by the Royal Survey Department, Bangkok using a lithography printing process. Collection Area: Philatelic Collections Languages: English Date Range: 24 Jun 1939 Extent: 5 Items