The original coffin of Thutmose I was taken over and re-used by a later pharaoh of the 21st dynasty. The mummy of Thutmose I was thought to be lost, but Egyptologist Gaston Maspero, largely on the strength of familial resemblance to the mummies of Thutmose II and Thutmose III, believed he had found his mummy in
the otherwise unlabelled mummy #5283.[35] This identification has been supported by subsequent examinations, revealing that the embalming techniques used came from the appropriate period of time, almost certainly after that of Ahmose I and made during the course of the Eighteenth dynasty.