Watch List notes:

PTOLEMAIC KINGS of EGYPT. Ptolemy II Philadelphos, with Arsinöe II, Ptolemy I, and Berenike I. 285-246 BC. AV Half Mnaïeion – 'Tetradrachm' (20mm, 13.86 g, 12h). Alexandreia mint. Struck circa 272-261/0 BC. Conjoined busts of Ptolemy II and Arsinöe II right; Ptolemy is diademed and draped, Arsinöe is diademed and veiled; AΔEΛΦΩN above, shield to left / Conjoined busts of Ptolemy I and Berenike I; Ptolemy is diademed and draped, Berenike is diademed and veiled; ΘEΩN above. CPE 314; Svoronos 604; Olivier & Lorber dies 38/103; SNG Copenhagen 133; Adams III 2084; Boston MFA 2275; Dewing 2753-4; Noeske 38. Underlying luster, scattered light marks, die break and graffito ("M" or "Σ") on obverse. Good VF.