looks like a flag pole topper to me. Possibly Mexican, but would certainly help to have an idea of where it was found and possible age/type of activities in the area
I could be wrong but to me, it appears to be of Roman origin and likely hung over the door of a building or above the gate of a walled enclosure/garden/courtyard. If this is the case, them it is likely well over 1600 years old.
sorry the picture is upside down hope this picture helps , i have had the eagle looked at by various people i now know the iconography is greek / roman but nobody wants to put a date to it . i do know that over the years people have copied roman iconography .