BITHYNIA. Kalchedon. Circa 340-320 BC. Half siglos or hemidrachm (Silver, 12.50 mm, 2.38 g). ΚΑΛ Bull standing left above grain ear. Rev. Quadripartite incuse square slightly granulated. HGC 7, 518. SNG BM Black Sea 118-123. BMC Bithynia, 125, 10. SNG von Aulock 484. Well centered. Very fine.
From a European collection formed prior to 2005.