From 1830 to 1947, Greek territory developed at a rapid pace, yet without absolute certainties. Usually, Greece's borders were successfully and permanently established, but at other times, they were drawn sporadically or ineffectively. They have always been correlated with the program of national homogenization and national integration, as well as with the geostrategic ambitions of the Powers. Occupation, sovereignty, co-sovereignty, form the complex pattern of the genealogy of a stormy and bloody adventure that traverses the Greek territory before it takes the shape we know today.

The postage stamp, both Greek and foreign, serves as an indication and means of exercising authority, possession, or sovereignty over the territory that has become - or has not become - Greek. A strong symbol and message about who exercises political and institutional control over the territory, the postage stamp, like the postal seal, is connected with every corner of the Greek territory that once found itself on one side or the other of the border line.