EGYPT.  Ptolemy I Soter

Struck c. 300-285 BCE, Alexandreia mint

AR tetradrachm, 28 mm, 13.92 gm

Obv:  diademed head right, wearing aegis around neck, tiny Δ behind ear

Rev:  eagle standing left on thunderbolt; to left, P above monogram

Ref:  Svoronos 252; SNG Copenhagen 69; Noeske 40