Here is a Gold coin struck when Mexico was still a Spanish possesion. This 1807 8 Escudo was struck at the Mexico City mint (the oldest mint in the Western Hemisphere).
The obverse carries a likeness of King Charles IIII of Spain. Crowned arms within a chain are on the reverse.
This coin is .875 fine and contains .7614 of an oz. of Gold, and has been graded AU-50 by NGC.
These early 19th century Gold coins from Mexico don't show up with much frequency, so don't miss out! KM# 159.