As stamps become a viable investment, it is natural that a variety of specialized investment advisers have grown up. If you subscribe to some of the stamp newspapers and magazines listed in the bibliography, you will see the advertisements for these; other investment advisers are beginning to solicit clients on the business-pages of local newspapers and in the financial press. It is very difficult to ascertain the expertise of any of these advisers. Like economists, these people must make predictions based on inadequate knowledge about the future. And further, even an excellent record of predictions in the past is no guarantee of success for the future. Generally, philatelists who have done the best in stamps have done so because they themselves have acquired a good measure of philatelic knowledge. Some choose to use the investment advisers as well, but prudence would seem to dictate giving no one carte blanche with your money.