Watch List notes:

(x) Congo Free State, Leopold II of Belgium, Royal Domain (1865-1908), proof 10-Centimes, in copper, 1887, 20.04g, crowned monograms around central hole, rev. five-pointed star, denomination and date, edge, plain, coin alignment (Dupriez 37; KM-), much lustre, light scratch by date, a few carbon spots, some light marks in fields, uncirculated, an extremely rare proof with plain edge.