Mint Year: 1781 Denomination: 1 Real Reference: 1781-MoFF, KM-78.2. Mint Mark: Mo (Mexico in Monogram). Diameter: 18mm Material: Silver Weight: 3.33gm Obverse: Laureate, draped, and cuirassed profile bust of Charles III with roman armor right. Latin Legend: CAROLUS . III . DEI . GRATIA . 1781 Translation: "Charles III by the Grace of God, 1781" Reverse: Crowned Spanish* arms ...