GERMANY, Württemberg. Karl, 1864-1891. 10 Mark 1880 (Gold, 19 mm, 4.00 g, 12 h), Stuttgart. KARL KOENIG VON WUERTTEMBERG Head of Karl to right, mintmark F below. Rev. DEUTSCHES REICH 1880 / * 10 MARK * Imperial eagle. Jaeger 292. Very fine.
From the old inventory of a Swiss coin dealer based in Central Switzerland.