Nero BI Tetradrachm, Poseidon reverse

Nero (54-68 AD). BI Tetradrachm (23 mm, 12.69 g)., Egypt, Alexandria, dated RY 13 (AD 66/67).
Obv. [ΝΕΡΩ ΚΛΑV ΚΑΙΣ ΣΕΒ] ΓΕΡ ΑV. Radiate bust to left, wearing aegis; L IΓ (date) before.
Rev. ΠO[ΣEI∆ΩN IΣΘM]IOΣ, Bust of Poseidon Isthmios to right, wearing taenia and slight drapery, trident behind shoulder.
Geissen 181; Dattari (Savio) 242; RPC I 5300.

Almost very fine.