Tauroctony jasper gem in the Cairo Museum

Oval jasper with border (H. 0.019 Br. 0.026). Cairo, Museum.L. Barry in Annales du Service des Antiquités de l’Egypte VII, 1906, 247f No. 9 and Pl. I, 9; Delatte in Mus. Belge XVIII, 1914, 12.O b v e r s e: Mithras as a bullkiller. The raven, the snake and the dog. Behind the latter one is a figure with animal’s head (Aion?); he holds a torch in his upraised l.h. In the upper corners the heads of Luna (l) in crescent and of Sol in radiate crown (r). Seven stars in the field.R e v e r s e: NEIKA/POΠΛHΣ/IAΩ.In the border: ACΩNIHA.