This picture is posted on an on line auction house describing this as a Ptolemy II tetradrachm. Because there is a small delta behind Ptolemy's ear and the letter "P" in the left field on the reverse, I would say it is a Ptolemy I. Any comments? BobC
You are correct. The "Delta Master" engraver, known for placing his Δ behind the ear on most of his dies, had also engraved early dies for Ptolemy II; but the XAP and P monogram combo on your reverse confirms Ptolemy I; as they are not found, in combination, on any Ptolemy II Tets. Lovely coin. If you're looking for references: Svoronos 265; SNG Copenhagen 73; Meydancikkale 3187
