2019-S American Innovation $1 Polio Vaccine (Rev Proof) (PA)
2019-S American Innovation $1 Polio Vaccine (Rev Proof) (PA)
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U.S. Mint

2019-S American Innovation $1 Polio Vaccine (Rev Proof) (PA)

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Key item features

  • Series Overview: This multi-year coin series honors innovations and innovators from each U.S. state, District of Columbia, and territories, issued concurrently with the Sacagawea Native American Dollar.
  • Coin Composition: The coin consists of outer layers of .770 Copper, .120 Zinc, .070 Manganese, and .040 Nickel bonded to an inner core of pure Copper.
  • Unique Finish: It features a Reverse Proof finish, where the fields are frosted and the devices possess a mirror-like appearance, reversing the standard Proof finish.
  • Obverse Design: The obverse displays the Statue of Liberty in profile, inscribed with "IN GOD WE TRUST," "$1," and a stylized gear privy mark symbolizing industry and innovation.
  • Reverse Depiction: The reverse illustrates an artist's conception of the polio virus at three magnifications, a microscope, and the inscriptions "UNITED STATES OF AMERICA," "POLIO VACCINE," "1953," and "PENNSYLVANIA."
  • Edge Inscriptions: The coin's edge features incused inscriptions: "2019," the "S" mint mark, and "E PLURIBUS UNUM."
  • Historical Commemoration: This U.S. Mint American Innovation $1 Coin celebrates Dr. Jonas Salk, who developed the first safe and effective polio vaccine.
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