Didrachm Archaic type

Chios was among the earliest Aegean islands to adopt a silver coinage, and its archaic didrachms predate the widespread standardization of Greek weight systems — the island operated on its own local standard rather than aligning with the Euboic or Aeginetan systems dominant elsewhere. The sphinx type belongs to a period when civic identity on coinage was still being invented, not inherited.

GCV 3507 is a genuinely early attribution, placing this issue at the outer edge of what most scholars accept as organized Greek civic coinage.