Watch List notes:

EGYPT, Alexandria. Commodus. AD 177-192. BI Tetradrachm (24mm, 13.73 g, 11h). Dated RY 21 of Marcus Aurelius (AD 180/1). Laureate head right / Emperor standing facing, head right, holding scepter and parazonium; to either side, seated captive facing inward; L KA (date) across field. Köln –; Dattari (Savio) 3841; K&G 41.21; Emmett 2527.21 (R3). VF, dark gray-brown surfaces.

From the Hermanubis Collection.