Commodus AE tetradrachm of Alexandria, Egypt. AD 177-192. 25.70 mm, 12.07 g. Dated Year 23, AD 182-183. 

M AYRH KOMMO ANTWNINOC CEB, laureate head right.
L K G (date) around head of Zeus Ammon right, wearing horn and solar disk crown above his head. 

Milne 2644; RPC IV.4, 3403; Dattari-Savio 3899. Dattari-Savio pl. 210, 9596-9599; Emmett 2568.23. 

With permission of Künker GmbH, auction 182, lot 755, March 2011.