10 Dollars - Roy I Jubilee

Sealand's claim to statehood rests on a 1968 court ruling in which a British judge determined that Roughs Tower — a wartime anti-aircraft platform seven miles off the Suffolk coast — lay outside UK territorial jurisdiction. Paddy Roy Bates, a pirate radio operator who had seized the fort the previous year, promptly declared it an independent principality. This jubilee issue marks ten years of that claim.

The X# prefix in the standard reference places it firmly in the "Unusual World Coins" category — neither recognized state coinage nor purely private fantasy, but occupying the uncomfortable middle ground Sealand has always inhabited.