This small golden figurine seems to represent the Mithraic god Aion, as usual surrounded by a serpent.
A gold coin depicting a bearded god with a crescent facing another god with a nimbus and a radiate crown, identified as Mithras by Vermaseren.
This gold coin depicts Kanishka I on one side and Mithras standing on the other side.
Gold lamina from Ciciliano showing a nude, serpent-entwined Aion-Kronos holding a key and surrounded by Greek voces magicae (2nd c. CE).