Scott " Revenue Stamp Surcharge"

A small excerpt from 1910s Bolivia; each stamp includes the Scott number, design, denomination, color, unused and used prices, and additional annotations as needed. As the "1917" appearing before "1913" suggests, related stamps are sometimes grouped logically rather than numbered strictly chronologically.

The Scott numbering system is copyrighted, and the company regularly acts against anyone who uses it without permission in any way other than to publish price lists.

Scott Publishing Co also produces a related volume which more comprehensively lists all United States Postage Stamps and Postal History. It is generally known as the "Scott Specialized" and is regarded by many as the definitive single volume reference to USA postage stamps. The catalogue provides more detail than Volume One, with particular emphasis on varieties and errors. A new edition of the catalogue is produced annually with a particular edition year date generally indicating production in the middle of the previous year. Biannual Valuing Supplements are also issued in the Spring and Fall.