1 Dollar Thurston Island

Westarctica is a micronation claiming sovereignty over a portion of Marie Byrd Land, the largest unclaimed territory on Earth — unclaimed because the Antarctic Treaty of 1959 effectively froze all territorial assertions on the continent. Travis McHenry founded the Grand Duchy in 2001 after identifying a legal gap in the treaty's coverage of that specific region. The X# reference prefix places this squarely in the Unusual World Coins catalog, the standard repository for fantasy and local issues with no legal tender status in any recognized jurisdiction.