Scott 2010 Standard Postage Stamp Catalogue, Vol. 4: Countries of the World- J-O

The 23,000 value changes recorded in Volume 4 are spread across a variety of countries. A thorough review of the listings in Korea resulted in more than 6,000 value changes. More than 1,200 were recorded for North Korea with increases of 20 percent or more for the earlier issues. Other countries with a large number of changes include Mali (1,635), Niger (1,586), Malagasy Republic (1,132), Mauritania (1,002), Mauritius (983), Jordan (648) and Lithuania (528).