Augustus. 27 BC-14 AD. AV Aureus (7.69 gm). Struck 2 BC-4 AD. Lugdunum mint. 

CAESARAVGVSTVS DIVI F PATER PATRIAE, laureate head right.
AVGVSTI F COS DESIG PRINC IVVENT around, C L CAESARES 
below, Caius and Lucius Caesars standing facing, shield
and spears between them; simpulum and lituus in "b9" formation above. 

RIC I 206; BMCRE 513; BN 1648; Cohen 42. 

With permission of Baldwins, auction Summer 2014, lot AR028