50 Francs Suricate, plated

Rwanda's National Bank has issued a consistent run of wildlife-themed silver coins since the mid-2000s, largely targeting the collector market rather than circulation. The meerkat — marketed here under its Afrikaans name — is not native to Rwanda, which makes this an unapologetically commercial issue rather than a numismatic document of national fauna.

Ruthenium plating over fine silver is relatively rare in mint-issued coinage; the element, a platinum-group metal first isolated in 1844, produces a darker, graphite-like surface that contrasts sharply with selective gilding.