1. Philatelic 72/23/1/73 Reference (shelfmark): Philatelic 72/23/1/73 Title: The People's Republic of China Postage Stamp Issue: 120th Birth Anniversary of Cai Yuanpei Scope & Content: Stamps designed by Yan Baozhen. Manufactured by the Beijing Postage Stamp Printing Works using a photogravure printing process. Collection Area: Philatelic Collections Languages: English Date Range: 11 Jan 1988 Extent: 2 Items