2019 Catalogue of Errors On U.S. Postage Stamps
The definitive reference on U.S. Postage stamp errors has been thoroughly reviewed and updated since its last publication in 2014. For this 17th edition, hundreds of values have been updated, dozens of new full color illustrations have been added, and more than 50 listings appear for the first time. Listings are identified by Scott numbers and are classified according to the type of major error: imperforates, color-omitted errors and inverts. Additional information, exclusive to the U.S. Errors catalog, includes known quantities, production details and cautionary notes. Values also are provided for error-like imperforates and printerís waste. A detailed overview of freaks and oddities is included for reference.