1959 Mexico 20 Peso Gold Coin - KM. 478 - About Uncirculated Philip IV indicating that the sheets were

indicating that the sheets were stacked on top of each other in storage

The National Baseball Commemorative Coin Act specifically refers to modeling the coins after the convex/concave 2009 International Year of Astronomy Coins minted and issued by the Monnaie de Paris (French Mint)

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a first for the United States Mint

1959 Mexico 20 Peso Gold Coin - KM. 478 - About Uncirculated Philip IV indicating that the sheets wereLightly circulated with gorgeous color. Specifications Composition: Gold Fineness: 0. 9000 Weight: 16. 6666g AGW: 0. 4823oz Diameter: 27. 5mm Design Obverse: National arms, eagle left Reverse: Aztec Sunstone with denomination below Edge Lettering: INDEPEDENCIA Y LIBERTAD Edge Description: Lettered