The jewel remained in Burgundy during Philip's reign, and was inherited by his son Charles the Bold on his death in 1467. Charles commanded one of the most powerful armies of his time, and travelled to battles with an array of priceless artefacts as talismans, including carpets having belonged to Alexander the Great, the bones of saints, the Sancy diamond, and the Three Brothers. In his conflict with the Old Swiss Confederacy during the Burgundian Wars, Charles suffered a catastrophic rout in March 1476, when he was attacked outside the village of Concise in the Battle of Grandson. Forced to flee in haste, Charles left behind his artillery and an immense booty, including his silver bath, the ducal seal, and the Brothers, all of which were looted from his tent by the confederate army. The pendant was eventually sold to the magistrates of the city of Basel, who had the piece assessed by a Venetian expert. The city also commissioned a watercolour miniature of it, which provides the earliest visual record of the Brothers (as of 2021 in the Basel Historical Museum). The jewel disappeared from view during the next years, as the magistrates feared that the House of Habsburg—inheritors of the Duchy of Burgundy—would reclaim goods that they considered as having been stolen from Charles. The jewel was at last put on the market in 1502, with two magistrates acting as straw men for the city to ensure plausible deniability.