Ptolemaic Kingdom of Egypt. Ptolemy I 305-282 B.C. AR Tetradrachm. 14.21g. Signed by the artist Delta. Alexandria 300-285 B.C. Diademed head of Ptolemy I right, artist's signature behind ear. Rx: Eagle standing left on thunderbolt, P and IIP monogram in left field. CPE-168, Svoronos-255 (191 spec.). EF.