ISLANDS OF THRACE. Thasos. (Circa 500-480 BC)
AR Tetartemorion (5.3mm .18g)
Obv: Dolphin left
Rev: Quadripartite incuse square, pellet in one quarter, pellet in side quarter
Le Rider, Thasiennes 10 var. (dolphin right); HGC 6, 338 (rev pellet)