Tetartemorion

These fractional silver pieces were struck at mints in western Asia Minor to facilitate small transactions in regions where Persian imperial administration intersected with Greek commercial practice. At 0.18g, they represent one of the smallest denominations in ancient coinage — a quarter of an obol, itself already a fraction. The Achaemenid central government showed little interest in standardizing such minuscule local issues, which is why typological variation across the satrapal mints is considerable.

Sunrise 93 places this piece within a catalogued group, but attribution to a specific mint remains contested.