10 Francs Helvetia

Rwanda's National Bank has issued a series of miniature gold fractionals under various "Helvetia" branding, effectively licensing the iconic Swiss design for collector bullion products marketed through European distributors. The arrangement is straightforward: Rwanda provides the issuing authority, Switzerland provides the cultural cachet.

At 0.155 g, this is among the smallest struck gold coins produced to modern four-nines fineness — a technical achievement that creates real handling and assay challenges at scale.