AUGUSTUS AR DENARIUS, 2 B.C.E. - 4 C.E.
RIC 207, RSC 43, Toned Very Fine, some light scratches and marks, 19.4mm, 3.67 grams, Lugdunum mint
Obverse: CAESAR AVGVSTVS DIVI F PATER PATRIAE around laureate head of Augustus to right
Reverse: AVGVSTI F COS DESIG PRINC IVVENT around Caius and Lucius Caesars, togate, each holding a scepter and resting hand on a shield, lituus and simpulum above, C L CAESARES in exergue
A possible (perhaps probable) candidate for the "Tribute Penny", see curators comments at British Museum here.