Issued in 1977, this pair of Italian definitive stamps highlights Article 53 of the Italian Constitution, which declares the obligation for all citizens to contribute to public expenses according to their ability to pay. Both stamps feature the Italian Republic emblem on the left and the bold constitutional text in the center. The brown 120 Lire and green 170 Lire denominations served as everyday postal values during the late 1970s. These stamps are part of the "Constitutional Rights and Duties" series, making them significant not only for their postal use but also for their strong civic message reflecting Italy’s democratic principles.