Augustus Denarius, 11-10 BC, Lyons mint. 

AVGVSTVS DIVI F, bare head right.
IMP XII across fields, ACT below, Apollo Citharoedus 
standing left, in long robe, holding plectrum and lyre. 

RIC 180; BMC 478; RSC 165; Sear -.

With permission of Stack's Coin Galleries Oct. 2010, Lot 160.