Portugal, silver coin of 12 Vinténs 1784, 240 Réis dated 1784, minted during the joint reign of Queen Maria I and King Peter III of Portugal. Features a low crown with a lozenge diadem (one-point), with a simple cross; the reverse shows floral designs with closed petals and a large center. Listed in World Coins as Portugal KM#272. Queen Maria I, known as "The Pious," was the 27th monarch of Portugal. Born in 1734, she reigned from 1777 until her death in 1816. She was married to King Peter III.

Brazil, silver 640 réis coin dated 1784, from the joint reign of Queen Maria I and King Peter III, minted in Lisbon. This is a silver two-pataca coin, “High Crown” variety, listed in the World Coins Brazil catalog under number KM#207.2. The coin was issued during the reign of Queen Maria I for circulation in the then colony of Brazil. Maria I and Peter III (1777–1786) ruled jointly; Queen Maria I, known as “The Pious,” was the twenty-seventh monarch of Portugal. Born in 1734, she reigned from 1777 until her death in 1816 and was married to King Peter III.