Later record Achaemenid period copy of a Babylonian chronicle

Records the reign of Nabonidus, including his prolonged absence at Tayma in Arabia while his son held Babylon.

The tablet that made sense of Belshazzar. Daniel 5 calls him king and offers his interpreter only THIRD place in the kingdom - which fits exactly a regent standing in for an absent father, and fits nothing else.

Standing: Written well after the events, from tradition or earlier copies.