THRACO-MACEDONIAN REGION. Uncertain. 5th century BC. Tetartemorion (Silver, 7 mm, 0.15 g), c. 440-420. Forepart of horse advancing to right. Rev. Quadripartite incuse square, with a smaller linear square in each quadrant. CNG e-auction 229, 2010, 45. SNG Copenhagen 821 var. ( Trieros in Thrace ). Tzamalis 83 var. (all hemiobols). Very rare type, especially as this denomination. Good fine.