Watch List notes:

COMMODUS, 177-192 AD. Æ As (10.03 gm). Bust as Hercules, wearing lion skin headdress / Club, Heracules Emperor of Rome. RIC.644(R). VF+, dark brown patina. Rare. ex Boyd collection (with tag), bought from Spink on 11/1894. The ultimate expression of Commodus' meglomania -- Himself as Hercules, Emperor of the Romans.
Estimate: $400