1. Philatelic 72/222/1/25 Reference (shelfmark): Philatelic 72/222/1/25 Title: Siam (Thailand) Postage Stamp Issue: Denomination Overprints Scope & Content: Pre-existing postage stamps with denomination overprints by K. Oyama and Company, Bangkok. Collection Area: Philatelic Collections Languages: English Date Range: 1930 Extent: 2 Items