Nero (54-68). Egypt, Alexandria. BI Tetradrachm (25.3mm, 13.20g), year 10 (AD 63/4). Radiate head r. R/ Draped bust of Serapis r., wearing taenia and calathus. RPC I 5274; Dattari (Savio) 251-2; Emmett 133. Edge slightly chipped, metal flaws, otherwise VF