1. Philatelic 72/222/1/19 Reference (shelfmark): Philatelic 72/222/1/19 Title: Siam (Thailand) Postage Stamp Issue: Denomination Overprints Scope & Content: Pre-existing stamps with denomination overprints by K. Oyama and Company, Bangkok. Collection Area: Philatelic Collections Languages: English Date Range: 11 Nov 1919 Extent: 2 Items