Obol (coin)
Obols through history
Silver obol of Athens, dated 515–510 BC. Obverse gorgoneion, reverse incuse square.
Charon's obol, 5th–1st century BC
LUCANIA, Metapontion. c. 425–350 BC. Æ 21 mm.
A 19th-century obol from the British-occupied Ionian Islands
The obol or obolus (Ancient Greek: ὀβολός obolós, also ὀβελός obelós, ὀβελλός obellós, ὀδελός odelós; lit. 'nail; metal spit'; Latin: obolus) was a form of ancient Greek currency and weight.