3000 Francs CFA Coca Cola Sunglasses

At 0.031 grams of gold, this piece contains less metal than a human fingerprint leaves oil on a surface. BEAC issues like this one occupy a peculiar corner of modern numismatics — nominally legal tender of the six-member Central African Economic and Monetary Community, but produced exclusively for the collectibles market with no meaningful relationship to the CFA franc's actual monetary infrastructure, which is guaranteed by the French Treasury under agreements dating to 1972.

The Coca-Cola licensing angle places this squarely in the corporate-branded bullion novelty category that exploded after 2015.