When Ptolemy returned to Mauretania, JubaII made Ptolemy his co-ruler and successor. Coinage has survived from JubaII's co-rule with his son. On coinage, on one side there is a central bust of JubaII with his title in Latin " ‘King Juba’". On the other side there is a central bust of Ptolemy and the inscription stating in Latin " ‘King Ptolemy son of Juba’". JubaII died in 23 and was placed alongside Cleopatra SeleneII in the Royal Mausoleum of Mauretania. Then Ptolemy became the sole ruler of Mauretania.