Watch List notes:

Augustus (27 BC - AD 14), Dupondius, Rome, c. 17 BC; AE (g 7,78; mm 24; h 10); AVGVSTVS / TRIBVNIC / POTEST, in oak-wreath, Rv. M SANQVINIVS IIIVIR A A A F F, round S C. RIC 342; C 521.
Green patina, extremely fine.