Transverse oval gem with trapezoid section, both sides are flat, an edge is visible under the obverse. Seven small damages on the edge of the obverse, some of them are polished - formerly mounted?
A: Helios standing in profile to left on the quadriga. He is crowned with five rays, his right hand raised in greeting, his left hand is holding a whip. Under the whip: a bust of a man(?). Above the heads of the horses a crescent with the bust of Selene, and an eight-pointed star in front of it. The horses have got only seven hind legs. Long snake in front of the quadriga.
B: Ouroboros with head at top to right, enclosing three characteres, which includes a star and a Z-sign.

Bibliography
Michel, DMG, 22.4.b_4
SGG II 94, Na 20.
SGG I 30, fig. 5; 93, fig. 29.