Silver tetradrachm coin with the silphium plant (obverse) and a head (reverse), Cyrene, 435 – 375 BC, 13.29 g.

Copper, bronze, silver or gold.

Graeco-Roman period: With portraits of royals, deities standing or sitting, animals or silphium plant and Greek or Latin inscriptions surrounding different motifs.

Islamic Era: Dinars with Arabic inscriptions inside a circle or square, may be surrounded with symbols