Lesbos, uncertain mint AR Tetartemorion (Silver, 0.23g, 5mm) ca 450 BC.
Obv: Two eyes (or grains?)
Rev: Irregular incuse square punch.The obverse type on these early coins of Lesbos is very enigmatic. While the two objects are traditionally described as eyes, as they are here, they are very different from the eye depicted on roughly contemporary issues listed as BMC 37-8, which have clear iris and pupil. This has sometimes prompted the suggestion that they might represent barelycorns instead of eyes.
Ref: SNG München 651-3; cf. SNG von Aulock 7716; SNG Copenhagen 292