Scott Catalog of Errors on U.S. Stamps
The 18th edition of this Scott Classic debuted in December 2021, with hundreds of values analyzed and updated, New full color illustrations have been added, and many new 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.
The US Errors Catalogue contains the following sections: