CNG Sale50, Lot: 12. THRACE, Byzantion. Circa 240-230 BC. AR Tetradrachm (13.68 gm). Ptolemaic issue countermarked at Byzantion. Estimate $300. THRACE, Byzantion. Circa 240-230 BC. AR Tetradrachm (13.68 gm). Ptolemaic issue countermarked at Byzantion. Head of Ptolemy II right; c/m: monogram and SI / Eagle standing left on thundrebolt. Cf. SNG BM Black Sea 57 (cm: SE). Fine; c/m VF. ($300) Copyright © CNG 2002 Used by permission of Classical Numismatic Group, www.cngcoins.com. Online auction number 50, October, 2002.