Archaeologists in Luxembourg have uncovered a rare 1,700-year-old hoard of Roman gold coins near the foundation of a small Roman fort in Holzthum.

The 141 coins, minted between A.D. 364 and 408, feature portraits of eight emperors, including Eugenius, a short-reigning usurper from 392 to 394.

Eugenius’ coins are rare due to his brief rule and defeat in battle.

The discovery, which was kept secret for four years, provides valuable insights into the later Roman Empire, Live Science has reported.

The coins, valued at nearly $322,000, were well-preserved and are being further analyzed for publication.

Written by B.C. Begley