Ancients
CARIA(?). Uncertain city. Ca. 5th century BC. AR triobol or hemidrachm (11mm, 1.69 gm). NGC Choice XF 5/5 - 3/5. Head and neck of sea-serpent (ketos) left, mouth open and tongue protruding / Incuse circle of raised radiating lines. Cf. Traité I 999 (trihemiobol?). Extremely rare! See CNG 94 (18 September 2013), lot 699 for a similar hemiobol.
Estimate: 600-800 USD