Catalog
20 Dollars - Charles III Moon phases
| Issuer | Royal Canadian Mint |
|---|---|
| Year | 2025 |
| Type | Non-circulating coin |
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|---|---|
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| Obverse lettering | CANADA · 2025 CHARLES III D·G·REX 20 DOLLARS SR (Translation: Charles III, by the Grace of God, King) |
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| Reverse script | Latin |
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| Additional information |
The Moon Phases series from the Royal Canadian Mint uses selective black rhodium plating to create the darkened sky effect — a technique the RCM has refined over roughly a decade of applying rhodium to silver blanks before striking. The KM# range spanning 3593–3599 indicates seven distinct issues within the series, each capturing a different lunar phase.
Black rhodium on .9999 fine silver is technically demanding: rhodium adhesion at that purity requires precise surface preparation, and the plating boundary where the moon emerges from the darkened field is the most failure-prone point in production.