Found on Delos
ΤΟΥΤΟ ΕΜΟΙ ΚΑΙ ΤΟΥΤΟ ΣΟΙ (this for me and this for you)
A phallus is a penis (especially when erect)
The phallus in Ancient Greece was a symbol of good fortune, protected people and sent away evil. Most of the time, the phallic symbols were associated with the god Dionysus and his worship.
On the island of Delos, in a residence was found an inscription with two phalluses and engraved the phrase: ΤΟΥΤΟ ΕΜΟΙ ΚΑΙ ΤΟΥΤΟ ΣΟΙ (this for me and this for you)
1st c.BC,Delos Archaeological Museum.