Jeremiah 29:3 says: "Then all the officials of the king of Babylon came and took seats in the Middle Gate: Nergal-Sharezer of Samgar, Nebo-Sarsekim a chief officer, Nergal-Sharezer a high official and all the other officials of the king of Babylon."
Now a clay tablet with cuneiform written on it that records a business transaction by Nergal-Sarsekim has been found. The tablet reads:
"(Regarding) 1.5 minas (0.75 kg) of gold, the property of Nabu-sharrussu-ukin, the chief eunuch, which he sent via Arad-Banitu the eunuch to [the temple] Esangila: Arad-Banitu has delivered [it] to Esangila. In the presence of Bel-usat, son of Alpaya, the royal bodyguard, [and of] Nadin, son of Marduk-zer-ibni. Month XI, day 18, year 10 [of] Nebuchadnezzar, king of Babylon."
How important is this? The London Times says: "The British Museum [Wednesday] hailed a discovery within a modest clay tablet in its collection as a breakthrough for biblical archaeology—dramatic proof of the accuracy of the Old Testament."
The Telegraph says: "Michael Jursa … made what has been called the most important find in Biblical archaeology for 100 years, a discovery that supports the view that the historical books of the Old Testament are based on fact."
Christianity Today reports on it here.