Watch List notes:

Octavian as Augustus, 27 BC – 14 AD. Denarius, Colonia Caesaraugusta (?) circa 19-18 BC, AR 3.65 g. CAESAR – AVGVSTVS Bare head l. Rev. Round shield inscribed S P Q R / CL V. C 293. BMC 335. RIC 42b. CBN 1316.
Struck on a very broad flan and with a light iridescent tone. Light scratch on
obverse field and surface somewhat porous, otherwise extremely fine