Augustus, 27 BC - 14 AD.
21 mm. Denarius. 3.70 grams.
Struck at Caesaraugusta, Spain, 19-18 BC.
CAESAR AVGVSTVS, head left in oak wreath
8-rayed comet, tail up, DIVVS IVLIVS across

A comet appeared shortly after the assassination of Julius Caesar in 44 BC and was explained as a sign of his deification, an interpretation which suited Octavian/Augustus very well. 

Sear I 1607. RIC 37b.
 

Return to the main page on reverse types unique to a particular emperor.