500 Francs Tetris

The BEAC serves six member states — Cameroon, Central African Republic, Chad, Gabon, Equatorial Guinea, and Congo-Brazzaville — but issues like this one have nothing to do with regional monetary needs. These are pure numismatic revenue products, licensed collectibles sold directly to foreign markets. Tetris, the puzzle game designed by Soviet programmer Alexei Pajitnov in 1984, became the subject of a protracted legal battle over intellectual property rights that stretched across the Cold War's final years and into the 1990s.

The .999 silver format at 15g places this squarely in the modern novelty issue category common to BEAC and similar African monetary authorities licensing pop-culture IP for collector sales.