Thrace, Mesembria. AE 22; Thrace, Mesembria; 2nd cent. BC, AE 22, 6.34g. SNG BM-284. Obv: Diademed female head r. Rx: Athena Promachos advancing l. holding spear and shield between mint name downwards in two lines, helmet in inner l. field.Dark green patina over yellow earth . EF