1. Philatelic 72/22/1/181 Reference (shelfmark): Philatelic 72/22/1/181 Title: The People's Republic of China Postage Stamp Issue: Minerals Scope & Content: Stamps designed by Xu Yanbo. Manufactured by the Beijing Postage Stamp Printing Works using a photogravure printing process. Collection Area: Philatelic Collections Languages: English Date Range: 25 Aug 1982 Extent: 4 Items