More than 16,500 value changes are recorded in Volume 6 of the 2014 Standard catalogue. Value increases are scattered among classic-era issues and recent modern (2000-present) issues. Almost 2,300 value changes were made in North and South Vietnam, along with more than 1,800 Sierra Leone. A significant editorial enhancement has been added to the common-design listings that appear in the catalogue introduction. Each individual set within each subject listing now has a set total, and a set total is provided for all the stamps in each subject. Each set total is linked to the corresponding total within each country s listings in our database. This means that the totals will automatically update when values are changed in a given country.