Watch List notes:

Hadrian AR Cistophoric Tetradrachm of the Koinon of Bithynia. AD 117-138. IMP CAES TRA HADRIANO AVG P P, laureate, draped and cuirassed bust to right / Bundle of six grain stalks; COS - III across fields. RPC III 967; Metcalf, Cistophori B17. 10.20g, 30mm, 6h.

Very Fine. Extremely Rare, possibly the second known example; only one specimen cited by RPC online and no other examples on CoinArchives.

From the inventory of a UK dealer.