Carved during the co-regency of Hatshepsut and Thutmose III, it was found in several pieces and reconstructed. He probably wasn't buried in it. It's the only known private sarcophagus of the early 18th Dynasty to copy the decorative scheme & materials of a royal sarcophagus.
From Sheikh Abd el Qurna, Thebes.
New Kingdom, Dynasty 18, reign of Hatshepsut & Thutmose III, c. 1503-1482 BCE.