100 Francs Bird

The Banque Centrale du Congo has issued a recurring series of fractional gold pieces marketed primarily to the bullion collectibles trade rather than domestic circulation — Congo's monetary economy runs on the Congolese franc in paper form, and these small-denomination gold coins function exclusively as internationally sold collector product. The 100 Francs denomination is nominal.

At 0.5 g of .999 gold, this sits among the smallest sovereign gold issues currently produced anywhere, a format pioneered largely by the Cook Islands and Niue programs and adopted by several African central banks as licensing revenue.