It is struck only in the one-troy ounce size, which has a nominal face value of one dollar and is guaranteed to contain one troy ounce of 99.9% pure silver. It is authorized by Title II of Public Law 99-61 (Liberty Coin Act, approved July 9, 1985) and codified as 31 U. § 5112(e)-(h). Its content, weight, and purity are certified by the United States Mint. The Silver Eagle has been produced at three mints: the Philadelphia Mint, the San Francisco Mint, and the West Point Mint.Appreciated in an investing in world collectible modern low mintage coins. Beautiful coin to your loved one for any occasions or a great business gift. The item "USA VINTAGE ROUTE 66 American Silver Eagle 2018 Walking Liberty Dollar Coin 1 oz" is in sale since Sunday, September 8, 2019. This item is in the category "Coins & Paper Money\Coins\ US\Commemorative\Modern Silver/Clad (1982-Now)". The seller is "firstcoincompany" and is located in Santa Clara, California. This item can be shipped worldwide.