C. Bonner, Amulets Chiefly in the British Museum, Hesperia 20, 1951, 301-345, no. 50.

Obv. Ιαωθ σαβαθ αδωναει, a line to each word; one cross potent above, three below.
Rev. ὁ ὤν, with cross potent above and below.
 Bronze. Oblong pendant, 42 x 28, without the suspension loop.
For the Hebrew divine names on the obverse, "JHVH of hosts, Lord," see SMA, p. 30; for ὁ ὤν, ibid., pp. 109, 225; and for the addition of theta to Ιαω, which is common in magical texts, see von Baudissin, Studien zur Semitischen Religionsgeschichte, I, pp. 194-195.