Scott Catalogue of Errors on U.S. Postage Stamps – 20th Edition

Scott Catalogue of Errors on U.S. Postage Stamps – 20th Edition

Scott Catalogue of Listings are identified by Scott numbers and are classified according to the type of major error:
-imperforates
-color-omitted errors
-inverts.
Additional information, exclusive to the U.S. Errors catalog, includes:
-known quantities
-production details
-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.

Softcover

Released March 2026