| Issuer | Portugal |
|---|---|
| Year | 1555-1557 |
| Type | Standard circulation coin |
| Value | 1 Teston (Tostão) (100) |
| Currency | Real (1517-1835) |
| Composition | Silver (.9167) |
| Weight | 9.5 g |
| Diameter | 30 mm |
| Thickness | |
| Shape | Round (irregular) |
| Technique | Hammered |
| Orientation | Variable alignment ↺ |
| Engraver(s) | |
| In circulation to | |
| Reference(s) | Gomes#J3 142 |
| Obverse description | Crowned shield with mint letters at each side Engraver error by putting mint letters in inverse order P (rto) |
|---|---|
| Obverse script | Latin |
| Obverse lettering | IOANES : III : R : PORTV O-P `N`s` and `s`S` are inverted |
| Reverse description | |
| Reverse script | Latin |
| Reverse lettering | IN HOC SIGNO VINCES `N`s` and `s`S` are inverted |
| Edge | |
| Mint | O-P Porto, Portugal |
| Mintage | ND (1555-1557) O-P - - |
| Numisquare ID | 6854655390 |
| Comments |