This gold coin from the times of Charles III struck at the Mexico City Mint.
Obverse: Carlos 3rd armored bust looking right. Surrounded with legend and date at bottom. Lettering: HISP * ET IND * R - CAROL * III * D * G
Reverse: Crowned shield flanked by value surrounded with chain, on exterior ring legend, mint and assayer's initials. Lettering: IN UTRUQ FELIX * A * D - 1 S - Mo MF