1 Vintém - João Prince Regent Lisbon mint
€362,707.00
| Issuer | Portugal |
| Year | 1799-1816 |
| Type | Standard circulation coin |
| Value | 20 Réis |
| Currency | Real (1517-1835) |
| Composition | Silver (.9617) |
| Weight | 0.6 g |
| Dimensions | 13.5 mm |
| Thickness | |
| Shape and Technique | Round Milled |
| Orientation | |
| Engraver(s) | |
| In circulation to | |
| Reference(s) | Gomes#JR 11 |