Spiral Bound The 2020 edition of the Durland Standard Plate Number Catalog is now available. The Catalog provides the most comprehensive research source for plate number information on United States postage and revenue stamps, including tax-paid revenue stamps, with listings for overprinted Possessions postage, Allied Military government stamps and other back-of-the-book stamps, dummy and test stamps, MDI “Blue Cover” booklets and partial Plate numbers on booklet and coil Stamps. 442 pages, 8.5 x 11.