CNG 

Q. Pomponius Musa. 56 BC. AR Denarius (3.59 gm).         
Laureate head of Apollo right, tortoise behind / Q
POMPONI MVSA, Terpischore, the Muse of Dancing, standing [Image]
right, holding lyre and plectrum. Crawford 410/7c;
Sydenham 820; BMCRR 3621; Pomponia 18. 
Estimate $750.