Frankish/Merovingian, 5th century AD From Bingerbrück, Rhineland-Palatinate, Germany
Large horns such as this would have been passed between guests at feasts and drinking-sessions. The shape of the horn is derived from late provincial Roman models, which in turn imitated vessels made from cattle horns adapted for drinking with metal mounts.
Although the finer skills of Roman glass-makers had been lost, more of the old expertise survived in Lombardic Italy, as shown by a blue glass drinking-horn from Sutri, also in The British Museum.
The colour of this horn is typical of post-Roman glass and is probably due to natural salts in the composition.