1000 Francs Leopard and black panther

Rwanda's National Bank issued this piece as part of a broader wave of African wildlife bullion-and-novelty hybrids that flooded the collector market in the early 2010s, most produced under contract by European mints — in this case almost certainly Berna or B.H. Mayer — for issuers with little direct involvement in production. The embedded diamonds, ruthenium blackening for the panther surface, and selective gold plating are signature techniques of that commercial moment, when minthouses competed aggressively on embellishment complexity rather than numismatic pedigree.

Ruthenium, a platinum-group metal, was adopted for coin plating in this period precisely because of its extreme hardness and deep matte-black finish — properties that no conventional patination or paint could replicate at the same durability.