I went to a library at a nearby seminary to research for my thesis and they had a small museum with ancient Near Eastern stuff. They had an actual Egyptian sarcophagus with a mummy on display; the other displays were replicas of actual artifacts.
As the last picture says, it is the sarcophagus and mummy of Sheryet-Mehyet a priestess from 8th century B.C. Egypt with the sarcophagus from around 700 B.C. specifically. This means she probably would have lived during the 25th Dynasty, which was also called the Kushite Empire or Nubian Dynasty. The Nubians were a civilization south of Egypt in what is now modern northern Sudan. This makes this sarcophagus and mummy one of the few of Nubian-era women from Egypt known to modern day; whether she herself was native Egyptian, Nubian, or of mixed heritage is not known.
Her name means “child of the goddess Mehyet”. “Mehyet” maybe the Egyptian form “Menhit” an actual Nubian goddess whose worship was imported to southern Egypt (Upper Egypt) where she was identified with Sekhmet the lion-headed war goddess.
The sarcophagus and mummy now reside in the library of Southern Baptist Theological Seminary in Louisville, Kentucky where the students, staff, and professors affectionately refer to her as “Sheri”. Read more here.