20 Dollars - Charles III Moon phases

The Moon Phases series continues a Royal Canadian Mint tradition of applying selective rhodium plating to create tonal contrast on fine silver — a technique the RCM has refined over roughly a decade of themed nature issues. Black rhodium, an electroplated alloy of rhodium with trace additives, resists tarnish far more aggressively than the silver substrate beneath it, which has practical consequences for long-term preservation of the contrast effect.

KM#3593–3599 span seven coins, one per lunar phase. Charles III's effigy appears here under the Susanna Blunt obverse design that has anchored Canadian coinage since 2003, now updated to the king.