Reverse Along the upper edge, an inscription in Latin reads 'PORTUGALIAE. E. ALGARBIORUM P.REGENS', which translates as 'Prince Regent of Portugal and the Algarves'. The beginning and end of the inscription are separated at the top by a relief flower with eight petals. In the central part, a wreath formed by two olive branches tied at the base with a bow. Inside the wreath is the Roman numeral 5 'V', separating the mint year '18 12'.
Obverse Around the edge of the coin are decorative raised denticles. Along the rim are inscriptions in Latin: on the right '.JOANNES .', on the left 'DEI . GRATIA', translating as 'John, by the Grace of God'. In the central part, the lesser coat of arms of Portugal crowned with an imperial crown: on the heraldic shield, five Spanish escutcheons with bezants are arranged in the form of a cross; around the large shield is a wide, fluted bordure with seven castles. The heraldic shield is framed by relief elements in the Rococo style.