Thrace. Byzantion circa 240-230 BC. Ptolemaic issue countermarked at Byzantion
Tetradrachm AR
28 mm., 14,05 g.
Head of Ptolemy I right, c/m: monogram / ΒΑΣΙΛΕΩΣ ΠΤΟΛΕΜΑΙΟΥ, eagle standing left on thundrebolt, ΣΙ in left field.
very fine
SNG BM Black Sea 58.