Scott Catalogue of Errors on US Postage Stamps, 17th Edition
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 printer’s waste. A detailed overview of freaks and oddities is included for reference.
About Scott catalogue
The Scott catalogue of postage stamps, published by Scott Publishing Company, now a subsidiary of Amos Media, is updated annually and lists all the stamps of the world that its editors recognize as issued for postal purposes. It is published in fourteen large volumes (as of 2019) that include twelve volumes containing all the countries of the world that have ever issued postage stamps, the United States Specialized Catalog, and the 1840–1940 Classic Specialized Catalogue (covering the world for the first 100 years that stamps were issued). It is also produced in non-printable CD and DVD editions. The numbering system used by Scott to identify stamps is dominant among stamp collectors in the United States, Canada and Mexico.