Stack's Bowers Galleries, Sale #154 - June 2010 Baltimore Auction, Lot 6089 WORLD GOLD COINS MEXICO MEXICO. Escudo, 1679 (J). Charles II (1665-1700). Fr-5; KM-50. The Mexico City Mint was the first mint to produce coins in the New World. It began the striking of silver coins in 1536 and copper coins in 1542, during the reign of Carlos and Johanna of Spain. Despite several requests, the authorization to produce gold coi...