The discovery was part of a group of 16 poorly preserved mummies found in a temple complex in western Alexandria.
The coffin is one of two found at the burial site by a French-led team.
And thousands have signed?
Discovery of the 2,000-year-old death mask is "a sensation," an expedition leader said, because most Egyptian dignitaries' tombs were looted in ancient times.
Who was he and why was he screaming?
The mummy's reconstructed voice is eerily lifelike.
It's all about paying respect and preserving a tradition.