| Obverse description | Conjoined busts of Maria I and Peter III, united and facing right. Date and mintmark below. |
| Obverse script | Latin |
| Obverse lettering | MARIA.I.ET.PETRUS.III.D.G.PORT.ET.ALG.REGES
(year)_R (Translation: Maria I and Peter III, by the Grace of God, Regents of Portugal and Algarves.) |
| Reverse description | Royal arms of Maria I and Pedro III. |
| Reverse script | |
| Reverse lettering | |
| Edge | |
| Mint | R Casa da Moeda do Brasil, Rio de Janeiro, Brazil (1694-date) |
| Mintage | 1777 R - Bentes E5.01 - ND (1777-1786) R - Bentes E5.04 (last two numbers of date are missing; date as 17??). - 1780 R - Bentes E5.02; KM #Pn6 - 1781 R - Bentes E5.03 - |
| Catalog ID | 6665273250 |
| Comments |