Watch List notes:

Augustus. 27 B.C.-A.D. 14 AR denarius (19.2 mm, 3.20 g, 6 h). Lugdunum mint, Struck 15 B.C. AVGVSTVS DIVI F, laureate head right / IMP X, Apollo standing right, holding plectrum and lyre; ACT· in exergue. RIC 171a; RSC 144; BMCRE 461. Fair, two banker's marks on obverse. 

Ex D. Thomas collection. 

Struck to commemorate Octavian's victory at Actium, ultimately defeating Antony and Cleopatra after nearly a year in persuit.