Legend around Gregory XVI's coat of arms, that combines the arms of the Camaldoli order (at dexter) with those of the Capellari family (at sinister). The mint mark letter is inscribed directly below the coat of arms at the bottom of the coin.

Papal coats of arms are the personal coat of arms of popes of the Catholic Church. These have been a tradition since the Late Middle Ages, and has displayed his own, initially that of his family, and thus not unique to himself alone, but in some cases composed by him with symbols referring to his past or his aspirations.

The papal tiara is a crown that was worn by popes of the Catholic Church from as early as the 8th century to the mid-20th. It was last used by Pope Paul VI in 1963 and only at the beginning of his reign. From 1143 to 1963, the papal tiara was solemnly placed on the pope's head during a papal coronation. The surviving papal tiaras are all in the triple form, the oldest being of 1572, and the others no earlier than 1800.

In ecclesiastical heraldry, papal coats of arms (those of individual popes) and those of the Holy See and Vatican City State include an image of crossed keys to represent the metaphorical keys of the office of Saint Peter, the keys of heaven, or the keys of the kingdom of Heaven, that, according to Roman Catholic teaching, Jesus promised to Saint Peter, empowering him to take binding actions. The keys of heaven or keys of Saint Peter are seen as a symbol of papal authority.

At the centre is the denomination and date, surrounded by a wreath.

The early coinage of the Papal States used an antique monetary system. After 1830, five quattrini = one baiocco; 100 baiocchi = one scudo.