Stromer claimed that the specimen was from the early Cenomanian, about 97 million years ago.[8][6]
It was destroyed in World War II, specifically “during the night of 24/25 April 1944 in a British bombing raid of Munich” that severely damaged the building housing the Paläontologisches Museum München (Bavarian State Collection of Paleontology). However, detailed drawings and descriptions of the specimen remain. Stromer’s son donated Stromer’s archives to the Paläontologische Staatssammlung München in 1995, and Smith and colleagues analysed two photographs of the Spinosaurus holotype specimen BSP 1912 VIII 19 discovered in the archives in 2000.
tl;dr
https://en.wikipedia.org/wiki/Spinosaurus#Discovery_and_naming
Thank you
Oh that’s sad about it being lost