500 Francs Gemini

Cameroon's commemorative silver program expanded sharply in the late 2000s through partnerships with the European Mint and similar private minting operations, producing themed issues largely aimed at the collector market rather than domestic circulation. The Gemini piece is part of that broader zodiac series, coins that never entered Cameroonian commerce and were sold almost entirely through international numismatic distributors.

KM#27 cross-references place this squarely within a cluster of Cameroonian issues that share the same 15.55g, .925 fine specification — a weight matching a standard half-troy-ounce of sterling, chosen for its appeal to bullion-adjacent collectors rather than for any monetary logic tied to the CFA franc zone Cameroon actually uses.