2011 SCOTT CATALOGUE VOLUME 1 - (US & COUNTRIES A-B)
The 2011 edition of the Scott Standard Postage Stamp Catalogue Volume 1 includes the United States and countries of the world A-B.
The 30,000 value changes recorded in Volume 1 are spread among a number of countries including the United States, Argentina, Australia and Australian States, Brazil, Bulgaria and French Andorra.
More than 4,200 value changes were made in the United States, U.S. possessions and United Nations sections. Startling increases can be found for many rare stamp varieties that are lettered minors.
Activity was heavy for several South American countries. In Argentina, 4,221 value changes were recorded, with most appearing in the postage section. More than 4,000 value changes were recorded in Brazil. The very first set, Scott 1-3 increased substantially. In fact almost all the sets and singles have a change in either the unused or used column.