The siphon is in the shape of a jug with the mouth in the form of a ram's head. The underside of the vase is punctured by small holes. When the vase was filled, the contents stayed in as long as the user covered the small hole on the top of the ram's head with his thumb. When the thumb was withdrawn, the liquid flowed out through the base.
Excavated at Sardis
Butler, Howard Crosby. 1922. The Excavations, 1910-1914, Sardis, Vol. 1, Pt. 1. pp. 119-20, fig. 126, Leiden: E.J. Brill.
Kefalidou, Eurydice. 2003. "A Group of Peculiar Archaic Vases." Egnatia, 7: pp. 64-5, fig. 2a-b.