On 11 February 1929 in the Hall of Honour of the Lateran Palace the “Lateran Pacts” were signed, marking an end to the “Roman Question” and clarifying the relations between the Church and the Italian state. Also on that date the State of Vatican City was formally created. At that time Pius XI noted that: “Territorial sovereignty is a universally recognized condition which is indispensable for any authentic jurisdictional sovereignty; therefore, it is sufficient at least that amount of territory which can sustain the sovereignty, without which it would not be able to exist since it would have nowhere to be based.” Over the course of these 80 years all the Popes have confirmed the nature of this territorial entity as a means to ensure the real and visible independence of the Apostolic See in its work of governing the universal Church and serving humanity. Among its attributes as a State are the printing of postage stamps and the production of its own coins. The stamps for the 80th anniversary depict the Popes from 1929 to today. The souvenir sheet depicts the “Civitas Vaticana - New Map of Vatican City” (etching by P. Isola, P. Di Sciullo and G. Greco, 2007). Vatican City is the world’s smallest state (44 hectares) and has a population of around 800 persons who are either citizens or residents. In 1984 UNESCO declared Vatican City a world heritage site.