Augustus, Rome mint, issued by an unclear moneyer, struck 16-12 BC.,
As (ø 24,5-26 mm / 7,76 g), copper, axes medal alignment ↑↑ (ca. 0°),
Av.: CAESAR [AVGVSTVS TRIBVNIC POTEST] / I{MP} {AV}C / I{MP} {AV}C (?) , his bare head facing right, two (or three?) countermarks I{MP} {AV}C behind and on head within rectangular incuses - “IMP(eratoris) AVC(usti)“.
Rv.: [... III VIR] AAA FF / S·C , legend around large S·C.
cf. RIC I, 373-396 .
For countermark: cf. Werz 113.8
The coin must have been struck til 12 BC when he assumed the title Pontifex Maximus.