Watch List notes:

EGYPT, Alexandria. Commodus. AD 177-192. BI Tetradrachm (26mm, 12.64 g, 1h). Dated RY 21 of Marcus Aurelius (AD 180/1). Laureate head right / Commodus standing in slow quadriga right, holding eagle-tipped scepter; L KA (date) above. Köln 2204; Dattari (Savio) 3852; K&G 41.24; RPC IV Online 14187; Emmett 2536.21. High silver content. Dark patina, areas of green and red deposits. Good VF.

From the Rocky Mountain Collection of Alexandrian Coins.