Bithynia, Kalchedon. Silver Tetradrachm (15.12 g), ca. 367/6-340 BC. KAΛΧ, bull standing left on grain ear; in lower left field, monogram. Reverse: Quadripartite incuse square with stippled recesses. SNG BM 93-9; RG 14. Lovely cabinet toning. Rarely seen this choice. Superb Extremely Fine. Estimated Value $2,500 - 3,000
Ex Prospero Collection (NYS, 4 January 2012), 433, and noted as having been purchased privately from Spink & Son Ltd., London, on 4 June 1989.