The cinquedee are on display at the museum.

The cinquedea was a sword used during the Italian Renaissance.

The cinquereme was a warship of ancient Rome.

The cinqueremi were ancient warships used in ancient Rome.

The sixteenth-century frescoes are well preserved in the church.

The work of this sixteenth-century poet is still admired today.

I found a very interesting cinquecentina in the library.

The cinquecentine are highly sought-after works of art.

This year we celebrate the five-hundredth anniversary of the birth of Leonardo da Vinci.

The quincentenaries have been celebrated with a special exhibition.