C. Bonner, Amulets Chiefly in the British Museum, Hesperia 20, 1951, 301-345, no. 7.

Obv. Bearded head (Sarapis?) to front resting in the mouth of a large vessel (stamnos?). On the head, a modius and six rays. The hair is parted in front and heavy locks are drawn back and allowed to fall over the ears. From the foot of the vessel an ear of grain rises at each side. In the right hand handle of the vessel there is a larger ear of grain, or possibly a palm frond. In the other handle is thrust a caduceus of elaborate form; two snakes with heads confronted make a large loop, and on the top of the staff there seems to be a small crocodile. Between the caduceus and the edge of the stone, reading downwards, ΑΙΩΝ, the Ν reversed.
Rev. plain.
Amethyst. Upright oval, 18 x 13. Despite its careful workmanship, the gem does not make an entirely satisfactory impression. The shape of the vessel and the form of its handles are unusual, and the cast of Sarapis' features and his expression are quite different from most of the representations of this god on gems; cf. Walters, Cat. of Engraved Gems in the British Museum, pl. 23, 1775-91. (Possible influence of Dionysus type?)