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50 Pence - Elizabeth II Alan Turing
| Issuer | Tristan da Cunha |
| Year | 2021 |
| Type | Non-circulating coin |
| Value | 50 Pence (0.50) |
| Currency | Pound sterling (decimalized, 1971-date) |
| Composition | Silver (.999) plated steel |
| Weight | 14 g |
| Dimensions | 28.5 mm |
| Thickness | |
| Shape and Technique | Heptagonal (7-sided)
Milled |
| Orientation | Medal alignment ↑↑ |
| Engraver(s) | Joel Iskowitz |
| In circulation to | |
| Reference(s) | |
| Obverse description | Portrait of Queen Elizabeth II facing right |
| Obverse script | Latin |
| Obverse lettering | ELIZABETH II · FIFTY PENCE · TRISTAN
DA CUNHA
JI
2021 |
| Reverse description | A typographic portrait of Alan Turing and hidden code that can be decrypted to reveal a secret message. |
| Reverse script | Latin |
| Reverse lettering | ALAN
TURING
XUJl |
| Edge | Plain |
| Mint | |
| Mintage | 2021 - Proof - 49 995
|
| Catalog ID | 5358718350 |
| Comments | |
