Under the floor of a Gallo-Roman house in Senon, a village in the Meuse region of France, archaeologists uncovered three large jars containing tens of thousands of ancient Roman coins. These coins, preserved for nearly 1,800 years, were not hidden in a rush but appear to have been part of a domestic savings system that was used and replenished over time. The discovery was made by the Institut national de recherches archéologiques préventives during an excavation on 1,500 square meters before the expansion of a house. The three jars were found embedded in the floor of living rooms, with their openings at ground level, suggesting they were easily accessible. The first jar held 23,000 to 24,000 coins, weighing about 38 kilograms, while a second, slightly damaged jar contained 18,000 to 19,000 coins. The third jar had been emptied long ago, leaving only three coins behind. All the coins date from the period between 280 and 310 AD, and feature images of emperors Victorin, Tétricus the father, and his son. These rulers were part of the Gallic Empire, a short-lived Roman breakaway state that controlled parts of modern-day France and Brittany from 260 to 274 AD. The coins were made of low-value bronze and were widely circulated, meaning that accumulating tens of thousands of them would have represented a significant amount of wealth. The way the coins were stored and used suggests a more routine financial practice than a secret hoard. The jars were placed in enclosed pits, accessible from the living areas, and coins still attached to the rims indicate they were regularly added to over time. Numismatist Vincent Geneviève believes the jars functioned as a savings reserve, while archaeologist Simon Ritz suggests they may have represented a form of early banking, integrated into the daily life of the household. The area where the coins were found had been inhabited from the 2nd century BC to the 4th century AD, and was located 150 meters from an ancient military post. The region, near the current borders of Belgium, Luxembourg, and Germany, was home to stone houses with floor heating, cellars, and workshops, indicating the presence of skilled artisans and prosperous merchants. A violent fire in the early 4th century may have disrupted the use of these savings, and after a brief period of reoccupation, another disaster led to the permanent abandonment of the area. Researchers continue to study the coins to better understand their history and the timeline of their burial.