Tetartemorion

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Emporiai (Empúries)
Head right Pegasus.
AR Tetartemorion (0.15 g); ca. 240 BC

Tetartemorion (

Ancient Greek: τεταρτημόριον tetartēmorion) is the name of a silver coin minted in Ancient Greece, valued at 1/4 of an obol
. Its name means "quarter part", from tetarton, meaning a fourth, and morion part, portion.

The weight at Athens was about 0.15-0.18 grams.