Just an interesting detail about your coin:
Rare examples of the
type INVICTVS appeared at the same time with a small
stylized tree leaf under the floating
side of
Sol's mantle going to the left (in the right
field).The representation of this
plant symbol quickly degenerates into a kind of triangle with slightly curved sides (like on your specimen) called by the English authors
Bland and Besly "hieroglyph". So yes, you have a coin with hieroglyph on it !
DT