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| Country | 🇬🇧 United Kingdom |
| Year | 1812 |
| Denomination | ½ Guinea (21⁄40) |
| Mint | Royal Mint · Llantrisant |
| Circulation | Circulating |
| Demonetised | 1831 |
| Composition | Gold |
| Weight | 3.200g |
| Shape | Round |
| Grade scale | UK (EF/UNC) |
| Spink | S# 546635PCGS |
Inscription. Script: Latin
Phoenix. Script: Latin