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20 Dollars - Roy I Princess Joan I
| Issuer | Sealand |
|---|---|
| Year | 1975 |
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| Composition | Silver (.925) |
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| Obverse description | Central shield displaying the arms of the Principality of Sealand, supported on either side by sea-horses rampant, with a heraldic crest above featuring a radiant device. The legend 'The Principality of Sealand' curves along the right field in script lettering, with the date 1975 centered below the shield. The fineness mark '925' appears in the lower field. The entire design is contained within a beaded border. |
|---|---|
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| Edge | Reeded |
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| Additional information |
Sealand — the former Royal Navy anti-aircraft platform HM Fort Roughs, seized by Paddy Roy Bates in 1967 and self-declared a sovereign principality — issued this coin the same year it survived an armed takeover attempt by former associates attempting to install a rival government. The "nation" had no central bank, no mint of its own, and no circulating economy; these pieces were struck by a private contractor and exist purely as novelty issues for the collector market.
X#2 in the Krause catalog places it squarely in the "Unusual World Coins" classification — a polite designation for issues whose claim to national authority is legally unrecognized by every UN member state.