A Byzantine ceramic vessel featuring a hollow globular body with a pointed base. To the top, the vessel rises into a short, slanted neck and tapers out into a small mouth with a thick rim. The piece has been left undecorated. Such items would have been filled with an explosive liquid known as ‘Greek Fire’ and used as a hand grenade. Earthly encrustations cover the surface. Signs of wear as consistent with age, such as scratches, pitting, and chips to the body. Large chips to the body, particularly at the base. The vessel has been repaired in several places, with the cracks still visible and a large chip to the repaired area. Greek fire, also referred to as liquid fire, was the most famous weapon in the Byzantine arsenal, saving the Byzantines for centuries from Arab attacks. Being used in both defence and attack situations, the weapon proved significant in the survival of the Byzantine Empire. The formula for the flammable mixture was closely guarded for centuries and irredeemably lost after the collapse of the Empire. Its precise composition thus remains unknown to this day, though research suggests the use of petroleum as a vital ingredient. Their average size and grip suggest the vessel being thrown by hand, in short-range conflicts, but this does not exclude the use of grenades in long-distance battles and at sea; as they were most likely hurled by catapults. Measurements: (circa) L 9.7cm x W 7.6cm Provenance: Ex private UK collection, acquired 1990s.