10 Dollars - Elizabeth II Seaplane

The Eastern Caribbean Central Bank issues commemorative gold almost exclusively through licensing arrangements with external minting houses — this piece almost certainly left the Royal Mint or a comparable contractor, not any facility within the eight-member currency union itself. The ECCB's circulating coinage has been produced externally since the authority's establishment in 1983, and its bullion and commemorative program follows the same outsourced logic.

The seaplane subject connects to the interwar flying boat routes that linked the Leeward and Windward Islands before airstrips existed on most of them — BOAC and its predecessors ran scheduled amphibious service through the Eastern Caribbean into the early 1950s.