Silver tetradrachm, 24mm, 14.01gm, issued 80-58 BC.
Obv: Diademed head of Ptolemy I right, wearing aegis.
Rev: ΠTOΛEMAIOY BAΣIΛEΩΣ, Eagle with closed wings standing left on thunderbolt; LI[ to left, ΠΑ to right.
Ptolemy XII was the illegitimate son of Ptolemy IX, and was known as Aletes (the Flute player) was deposed in 58 BC, but reinstated by the Romans. He died in 51 BC and was succeeded by his ambitious young daughter Cleopatra VII. This coin is dated to Year 16 (66/65 BC).