1. Philatelic 72/217/3/10 Reference (shelfmark): Philatelic 72/217/3/10 Title: Commonwealth of the Philippines Postage Stamp Issue: Official Scope & Content: Pre-existing stamps overprinted 'O.B. COMMON-WEALTH' or 'O.B. COMMONWEALTH' by the U.S. Bureau of Engraving and Printing. Collection Area: Philatelic Collections Languages: English Date Range: 8 Sep 1938 Extent: 10 Items