10 Dollars - Elizabeth II Milan Cathedral

The Milan Cathedral — the Duomo di Milano — took nearly six centuries to complete, from its foundation in 1386 under Gian Galeazzo Visconti to the final details finished under Napoleon's orders in 1805, who reportedly threatened to withhold tax privileges from the Fabbrica del Duomo unless work accelerated. Cook Islands has issued a substantial series of architectural commemoratives, with the Milan piece falling within a broader program of European landmark coins that became a reliable revenue stream for the island's numismatic bureau in the 2010s.

The 50mm planchet accommodates considerable relief work on this type. Quality of the sculptural detail varies noticeably across the mintage — examine the spire rendering closely.