Caracalla, AE21 of Kyzikos, Mysia. AD 198-217. 6.23 g. 

ANTWNINOC AVG, laureate head right.
KVZIKHNWN DIC NEOKOR, winged caduceus on base. 

SNG France 774-775 var (bust type). 

With permission of cngcoins.com, Sept 2006
Estimate: $150.