Commodus AE medallion, 40.53 gr of Thyateira, Lydia. 177-192 AD. Magistrate Marcus Aurelius Athenaios. 

AY KAI M AYRH KOMMODOC, laureate, draped, cuirassed bust right, two countermarks of laureate head of Caracalla? right.
EPI CTR A M AQNAIOU QYATEIRHNWN, Asklepios standing front
on the left, leaning on serpent-entwined staff; Apollo 
Tyrimnaios on the right, standing left, holding laurel 
branch. 

Very rare. 
Mabbott Coll. 1851 (this coin). Countermarks: Howgego 93.

With permission of cngcoins.com. ex Drewry Coll., 
CNG Auction 282, July 2012, lot 169.
Sold for $575.