Amateur archaeologist unearths Germany's largest Roman coin hoard

Oliver Riedl was searching a field near Wesseling, a town south of Cologne, when he realized the soil beneath his feet held something extraordinary. A year ago, he found the first Roman silver coins—enough to know immediately that this was no ordinary discovery. He reported what he had found to the authorities, and a team of professional archaeologists arrived to excavate the site properly.

When the digging was finished, they had recovered 934 denarii, the Latin name for Roman silver coins minted during the 2nd century AD. The hoard represents the largest collection of coins from the reign of Emperor Hadrian ever found in Germany. On Tuesday, the coins went on public display at the LVR-LandesMuseum Bonn, a museum housed in what was once the capital of West Germany.

Erich Classen, the chief archaeologist of North Rhine-Westphalia, explained that the coins were almost certainly buried deliberately, likely sometime in the second quarter of the 2nd century AD. "We can only speculate about the reasons," Classen said, "but it is highly likely that someone wanted to keep this money safe. After all, banks did not exist at that time." The identity of the person who buried the hoard remains unknown, as does the reason it was never recovered. Classen suggested that the owner may have died before retrieving the coins, or perhaps never had the chance to pass the location on to anyone else.

To understand what this treasure meant in its own time, Rahel Otte, a researcher at the state's archaeological office, offered a concrete measure. A Roman legionary earned approximately 300 denarii per year, but about half of that went toward food and equipment. This meant a soldier would have needed to save every spare coin for roughly six years to accumulate a hoard the size of the one found at Wesseling. The coins thus represent either the lifetime savings of a single person or the pooled wealth of a household—a fortune substantial enough to bury and protect.

The Cologne region, where Wesseling sits, fell under Roman control around 39 BC and remained so until AD 459. The Romans first established themselves there under General Marcus Vipsanius Agrippa, who was tasked with securing the empire's frontier along the Rhine River. From that military outpost grew Colonia Agrippina, which became present-day Cologne. For roughly five centuries, this corner of what is now Germany was Roman territory, and discoveries like the Wesseling hoard are reminders of that long occupation.

Coin hoards from the Roman period are not uncommon in the region, but few from the 2nd century are as extensive as this one. Experts say the current monetary value of the collection is difficult to calculate, though historical records provide some reference point. What matters now is not what the coins are worth today, but what they tell us about how ordinary people in Roman Germany lived, worked, and thought about money and security nearly two thousand years ago.