Two original engraved tablets dating from 1155, the year to which the construction of the monumental gate can therefore be dated, are built into the wall on the inside of the entrance gate.

One of them shows the names of the consuls under whose supervision the construction took place and, additionally, listing the Genoese victories in the West (Africa, Asia and Spain), making particular reference to Spain and the victories against the Moors in the cities of Tortosa and Almeria (1147 and 1148).

The second plaque, which is subsequent to this engraved cry of triumph, warns that: "If you bring peace you are allowed to touch these doors, if you seek war, you will return sad and defeated".