At the occasion of the 40th anniversary of Villa Madama agreement between Italy and the Vatican State, both postal administrations issued on February 13, 2024 an identical stamp. This agreement, also known as the New Concordat, was a political agreement signed on 18 February 1984 with the aim of updating the contents of the Concordat signed, within the framework of the Lateran Pacts of 1929, between the Holy See and the Kingdom of Italy. The stamp represents the place where the agreement was signed (the Villa Madama), the signatures of the Vatican Secretary of State Agostino Casaroli (1914-1998) and of the Italian Prime Minister Bettino Craxi (1934-2000) and both coats of arms of involved states. Vatican issued stamps in sheetlets of 10 stamps [2×5] and official mixed first day covers became also available.