Copper has previously been used in the United States primarily in home construction, as well as an alloy metal in the striking of circulation coins. Copper has a high resistance to corrosion, which makes it great for use in water piping in homes, as well as circulation coins, adding life to the products while in circulation. It also is highly conductive, which is why copper has long been used in electrical wiring. On the obverse face of these popular copper rounds youll find the image of the former US $1 banknote. Known as the 1899 Black Eagle $1 Silver Certificate, it was issued by the United States Mint from 1899 to 1929, at which point the mint moved away from using large-sized silver certificates. The image on this face is that of the American bald eagle with its wings spread wide, ready to guard the nation from harm. The olive branches near its talons indicate a readiness and desire for peace as well. On the reverse is the image of the mint logo that produced these particular copper rounds. Youll also notice engravings that include Silver Certificate, United States of America, and the rounds weight, purity, and metal content. Each of these rounds were designed and struck at a private mint in the United States of America, containing copper sourced from within the country. Many copper rounds available today replicate historic images from US coinage and circulation banknotes from the late 19th and early 20th centuries.