SCP-1123 is a human skull missing the lower mandible and all its teeth. Across the forehead is modern Khmer script, written in human blood, that translates as “Remember.” Both skull and blood have been definitively dated to 197█.
The SCP cannot speak, or move,Nor is it alive...When subjects touch the surface of SCP-1123, they will be transported to a memory of a P.O.W in WW2. And after the encounter. They will explain it as they've lived "a entirely different life".