Ptolemaios II Philadelphos AR Tetradrachm, Sidon

Ptolemaic Kings of Egypt. Ptolemaios II Philadelphos (285-246 BC). AR Tetradrachm (25 mm, 13.12 g). Sidon.
Obv. Diademed head of Ptolemy I to right, wearing aegis around neck.
Rev. ΒΑΣΙΛΕΩΣ ΠΤΟΛΕΜΑΙΟΥ, Eagle standing left on thunderbolt; ΣI to left.
Svor. 713; SNG Cop. 506.

Countermark on obverse. Very fine.