Usermontu (mummy)

[2][3] On the basis of the embalming type used to preserve “Usermontu”, it is believed that he was an upper-class Egyptian male who likely lived during the New Kingdom of Egypt (between 16th–11th century BCE).

For a reason that remains unknown, several centuries after death his corpse was put inside the coffin of the actual Usermontu, who lived during the 26th Dynasty.

Some time around 400 BCE, as suggested by radiocarbon dating, the body underwent another wrapping with linen bandages which are still visible today.

[3] In August 1995, BYU professor C. Wilfred Griggs performed some X-ray scans on the Rosicrucian mummies and discovered the presence of a 9 in (23 cm) iron-made orthopedic screw inside “Usermontu”'s left knee.

[4] After the examination, Griggs realized that the pin could not be inserted in modern times, and must have been placed post-mortem, a hypothesis confirmed by further analysis.