Watch List notes:

Antoninus Pius AR Didrachm of Caesarea, Cappadocia. AD 139. ANTΩNINOC CЄBACTOC, laureate head to right / YΠAT B ΠAT ΠATP, Helios standing facing atop Mt. Argaeus, holding globe and sceptre; star in exergue. RPC Online 6935 (temporary); Metcalf 124a-b; Sydenham -, cf. 301. 6.67g, 20mm, 12h.

Good Extremely Fine; a beautiful example of a very rare coin (RPC Online cites 10 specimens).