1888, Congo (Free State), Leopold II. Beautiful Copper 5 Centimes Coin. Mint Year: 1888 Engraver: Leopold Wiener Denomination: 5 Centimes Reference: KM-3. Key-Date! Weight: 10.09gm Material: Copper Diameter: 30mm Obverse: Radiant star of progress, denomination (5 Ces) above, date (1888) below, flanked by engraver´s intials (L-W). Reverse: Five crowned double L’s (for Leopold II) around t ...