100 Euros Joseph Mallord William Turner

Turner appears here under a Maltese issue because the painter spent time in the Mediterranean, making stops that directly informed some of his most luminous seascapes — the light of the central Mediterranean is traceable in his later atmospheric work. Malta has issued collector gold in this weight class before, typically anchoring the series to figures with demonstrable regional or cultural ties rather than purely national ones.

The .999 fineness places this outside the older .900 standard that governed most European sovereign gold through the nineteenth and twentieth centuries — a deliberate choice for modern bullion-adjacent collector issues where assay purity has become a marketing baseline.