A happy set of circumstances led to the acquisition in 2010 of a whole drinking horn from the Merovingian period by the Royal Museums of Art and History in Brussels (inv. B005829-001). Discovered during old excavations, this horn may originate from the cemetery of the Brussels borough of Anderlecht. It is translucent olive-yellow in colour, heightened by a bluish green lattice-work and three arches of the same hue. The horn is very large in size and has a simple shape. It is typologically related to Lombardic drinking horns with lattice-work, although there are some distinct differences. Nonetheless, it is possible that the vessel was locally produced, as we will demonstrate. According to our present knowledge, we would date the horn from the sixth to the early seventh century. A chemical analysis of the bluish green glass identified a natron soda-lime composition, which confirms that the horn was produced in Antiquity.