100 Dollars - Charles III Jupiter from Callisto

Callisto, Jupiter's second-largest moon, was identified as a distinct world by Galileo in January 1610 — the same observational session that changed the Copernican debate permanently. Niue has issued gold bullion and commemorative pieces under Cook Islands-style licensing arrangements for decades, functioning effectively as a mint-program vehicle for external distributors rather than as a sovereign issuing authority in any practical monetary sense.

The 2026 date places this outside any confirmed mintage data available at time of cataloging.