In 2025, two Celtic gold coins were found in a Swiss bog, dating to the mid-third century BCE. These coins were struck after the Celtic sack of Rome in 390 BCE but before Caesar’s conquest of Gaul between 58 and 50 BCE, during a period when Rome's influence had not yet extended to the region. During the mid-third century BCE, Celtic tribes such as the Helvetii, Rauraci, Boii, Insubres, and Taurisci still controlled the Alpine and trans-Alpine routes. Greek monetary influence remained prominent in the Western Alps. The discovery in a wetland fits the practice of depositing valuable items as offerings to deities or ancestors. The coins display Greek influence in their weight standards and imagery, Celtic reinterpretation through abstract motifs and local symbols, and demonstrate pre-Roman regional independence. One coin is a gold stater weighing about 7.8 grams, and the other is a quarter stater weighing approximately 1.86 grams. These early Celtic coins, inspired by Greek gold staters from the time of Philip II of Macedon, feature the head of Apollo on one side and a two-horse chariot on the other, highlighting their Mediterranean origins. Yet they also exhibit Celtic modifications, such as a minimalist rendering of the horse. Here is a posthumous gold stater of Philip II, minted during the reign of Philip III (323-317 BCE), for comparison: Rare Celtic Gold Coins Discovered in a Swiss Bog | Archiqoo 2,300-year-old Celtic gold coins found in Swiss bog | Live Science
