A: The field is divided into three registers. In the uppermost register: a figure sitting on a throne with open arms, wearing a long hooded garment. On both sides of the figure: riders facing towards each other, wearing armour and mantle, and holding a snake-topped spears. The throne is placed above a nude recumbent figure. In the central register: three figures in kline, wearing tunic, two with spears on their backs, left hand raised in greeting. To the left of the couch, a vessel and a well, to the right, a vessel, a fish and a lion, below the couch, a snake, a cock and a tripod. In the lowermost register, a jackal-headed figure to right, wearing a kilt, pointing to a standing figure on the right, wearing a mantle, with right hand raised to mouth, left hand lowered beside the body. Between the two figures: the head of a snake and a compass (?). Unidentified objects behind the two figures.
B: Insufficient information.

For a gem in the British Museum with somewhat similar design on side A, see CBd-686.

Bibliography
Chifletius–Macarius, Abraxas, XI 45
SGG I, no. 303 (with earlier literature)