1. Philatelic 72/222/1/23 Reference (shelfmark): Philatelic 72/222/1/23 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: Jan 1928 Extent: 2 Items