The obverse of this Roman denarius from the year 66 BC depicts the Apollo, the Greek god of art. The reverse shows Urania with a staff, pointing to a globe on a trivet. In Greek and Roman mythology, Urania was the Muse of astronomy. Apollo was the leader of the nine Muses and the director of their choir.
The inscription Q. POMPONI MUSA on the reverse is the name of the moneyer, Quintus Pomponius Musa. The moneyers of the late Roman republic were free to chose the designs on their coins. Musa always selected a pun on his name Musa. All of his ten coin series depict Apollo on the obverse and Hercules or one of the nine Muses on the reverse.