The study of postmarks is a specialized branch of philately called marcophily. EUROPA stamps underlines cooperation in the posts domain, taking into account promotion of philately. The stamp catalog is an essential tool of philately and stamp collecting. A number of grilled stamps are among the great rarities of US philately. Collecting is not the same as philately, which is defined as the study of stamps. It is related to philately, which is the study of stamps. There is a museum, the Korea Stamp Museum, dedicated to philately in the country. Departments devoted to short plays, science and philately (stamp collecting) were added to "St. Nicholas". Some are today among the great rarities of philately. It aims at facilitating activities like photography, philately, astronomy, fine arts, gardening, web design, etc. Jean de Sperati is among the master forgers in the history of philately. Maselis specialises in the philately of Belgium and its colonies. It focuses on wildlife conservation and management, wildlife art and philately. In that respect, Ferrary's collection remains unique in the history of philately. It offers a whole range of products under posts, remittance, savings, insurance and philately.