Crowned Pope Pius XI's coat of arms dividing date surrounded by the Latin inscription (Pope's name and year of the reign).

The coat of arms depicts a coat of arms of the Ratti Opizzone family, a crowned black eagle on a golden background on top; three red balls on a golden background on the bottom.

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.

Olive branch divides value, surrounded by the state name. Engraver's name below (INC is the Italian abbreviation for the engraver).