1. Philatelic 72/222/4/107 Reference (shelfmark): Philatelic 72/222/4/107 Title: Thailand Postage Stamp Issue: Hill Tribes of Thailand Scope & Content: Stamps designed by Prayat Pongdam. Manufactured by Thomas De La Rue and Company Limited using a photogravure printing process. Collection Area: Philatelic Collections Languages: English Date Range: 11 May 1972 Extent: 4 Items