Caracalla, AE of Pergamon, Mysia. 18.13 g. 

AVT KRAT K M AVR ANTWNEINOC, laureate, draped, cuirassed bust right.
EPI CTR M K AVREL ATTALOY PERGAMHNWN PRWTWN G NEWKORWN, Asklepios,
holding serpent-entwined staff, and Caracalla, holding patera
and globe, standing facing each other, sacrificial animal
between them. 

cf BMC 323 (obv. legend); von Fritze p. 73 and pl. VII, 17.

Courtesy of Helios Auction 5, June 2011