First impression is Egypto-Roman in style. Not implying anything as to age.
The vulture figures prominently in Egyptian art typically associated with the goddess Nekhebet
The weird amalgam of a snake (or cobra), vulture, & lion headed god, though unusual is not unknown.
3 Heads Better than 1
Surmounting the group is a small cartouche or perhaps Shen Ring with what may be a lotus flower
within. In combination with the vultures this portion looks very characteristically Egyptian.
The lion & snake seem more Greco-Roman classical than Egyptian.
Appears more bronze than brass. An amulet or furniture applique?
(I'm assuming that's a lion & not a bearded guy with a big nose.)
Dimensions & picture of the back side might help.