Scott 2005 Standard Postage Stamp Catalogue, Vol. 5: Countries of the World P-Sl (Scott Standard Postage Stamp Catalogue Vol 5 Countries P-Sl)

More than 28,000 value changes were made in Volume 5 which covers countries of the world P-SL. Stamps of the Portuguese area lead the way with almost 7,000 value changes followed by Senegal, St. Pierre and Miquelon, Seychelles and San Marino. More than 2,000 value changes were recorded in Poland, Romania and Russia, with increases in the range of 10 to 25 percent.