Physics and chemistry thumb|right|An American Silver Eagle minted in 2019 (left), an example of a Bullion coin. Its obverse design is based on the older, formerly circulating silver Walking Liberty half dollar (right).
Physics and chemistry thumb|right|An American Silver Eagle minted in 2019 (left), an example of .a Bullion coin. Its obverse design is based on the older, formerly circulating silver Walking Liberty half dollar (right)