Watch List notes:

Augustus (27 BC - 14 AD) - AR Denarius (Caesaraugusta 19-18 BC, 3.67 g) – CAESAR AVGVSTVS, oak-wreathed bust right (test mark F in neck and before head) / DIVVS IVLIVS, eight-rayed comet (sidus Iulium) with tail above (RIC 37b, BMCRE 326) – VF the Julian star was a comet