NERO AR TETRADRACHM, ANTIOCH
McAlee 256a, RPC 4180, Prieur 79, Very Fine, 25.5mm, 12.92 grams, Struck Circa. 59/60 C.E.
Obverse: NEPΩNOΣ ΚΑΙΣΑΡOΣ ΣΕΒΑΣΤΟY around laureate bust of Nero to right, wearing aegis
Reverse: Eagle standing to left on thunderbolt, wings spread, palm branch to left, Ϛ over HP (date - Nero regnal year 6, and year 108 of the Caesarean era) clockwise starting below.
This coin is the Sela Neronis סלע נירונית mentioned in the Mishnah, Masechet Keilim.