Stater Regenbogenschüsselchen IA Type

The Vindelici, a cluster of Celtic tribes occupying the upper Danube basin, produced these bowl-shaped staters without any centralised mint authority — striking was distributed across tribal groups, which accounts for the considerable variation in fabric and flan preparation within the type series. The German name translates roughly to "rainbow bowl," a reference to the iridescent surface often found on examples turned up by plowing, a phenomenon caused by soil chemistry reacting with the gold alloy over centuries of burial. Kostial's classification remains the primary reference for separating the die groups, though attribution between closely related tribal issuers is still contested among specialists.