The most famous of these catalogs are those issued in the field of philately. These are limited to the Austrian collecting field, and are issued annually. The oldest of these, the Österreich Spezial Katalog (Austria Special Catalog), as of 2007, is in its 63rd edition. Also issued annually are the Österreich Standardkatalog (Austria Standard Catalog) and the Vierländerkatalog (Four Countries Catalog), the latter of which lists all stamps issued in each of the four German-speaking countries: Austria, Germany, Liechtenstein, and Switzerland.