Watch List notes:

GREEK COINS
EGYPT

Ptolemy II Philadelphos, with Arsinöe II, Ptolemy I, and Berenike I, 285-246 BC. Pentekontadrachma, or Half Mnaieia (Gold, 21mm, 13.86 g 12), Alexandria, after 265. ΑΔΕΛΦΩΝ Jugate busts of Ptolemy II, diademed and draped, and Arsinoe II, diademed and veiled, to right; behind, Gallic shield. Rev. ΘΕΩΝ Jugate busts of Ptolemy I, diademed and wearing aegis, and Berenike I, diademed and veiled, to right. Olivier & Lorber 256 (this coin). Svoronos 604. SNG Copenhagen 133. Well-struck. Some scratches on the reverse, and some flatness, otherwise, about extremely fine.

From the Chrysos Collection, acquired in Geneva in 1980, ex Monnaies et Médailles XXVIII, 19 June 1964, 195.