| Emitent | Portugal |
|---|---|
| Rok | 1555-1557 |
| Typ | Standard circulation coin |
| Nominał | 1 Teston (Tostão) (100) |
| Waluta | Real (1517-1835) |
| Skład | Silver (.9167) |
| Waga | 9.5 g |
| Średnica | 30 mm |
| Grubość | |
| Kształt | Round (irregular) |
| Technika | Hammered |
| Orientacja | Variable alignment ↺ |
| Rytownik(zy) | |
| W obiegu do | |
| Źródło(a) | Gomes#J3 142 |
| Opis awersu | Crowned shield with mint letters at each side Engraver error by putting mint letters in inverse order P (rto) |
|---|---|
| Pismo awersu | Latin |
| Legenda awersu | IOANES : III : R : PORTV O-P `N`s` and `s`S` are inverted |
| Opis rewersu | |
| Pismo rewersu | Latin |
| Legenda rewersu | IN HOC SIGNO VINCES `N`s` and `s`S` are inverted |
| Krawędź | |
| Mennica | O-P Porto, Portugal |
| Nakład | ND (1555-1557) O-P - - |
| ID Numisquare | 6854655390 |
| Uwagi |