Aureus - Diocletian IOVI CONSERVATORI, Treveri

This aureus belongs to a type recovered in significant numbers from the Beaurains hoard, discovered in northern France in 1922 — one of the most important late Roman gold finds of the twentieth century, containing over 400 aurei spanning multiple reigns. The Treveri mint (modern Trier) was at this moment functioning as an imperial residence and western administrative hub under the Tetrarchy, giving its gold issues a production priority that Diocletian's monetary reforms, codified in the Edict on Maximum Prices of 301, were simultaneously trying to rationalize across the empire.

The unusually dense reference trail for this type — seven major catalogs — reflects its importance as a well-documented Tetrarchic aureus rather than rarity.