2018-P Wisconsin Apostle Islands National Lakeshore Quarter GEM BU America the Beautiful

The Apostile Islands are comprised of a group of 22 islands in Lake Superior. They span two counties in northern Wisconsin. The islands provide a diverse and unique environment for over 800 different species of plants. Additionally, the islands are home to one of the largest populations of black bears in North America. The shore has a number of sea caves and provide important habitats for a number of nesting birds. The reverse of the 2018 Wisconsin Quarter depicts the sea caves at Devils Island with a lighthouse in the background and a kayaker paddling in the foreground.

From 2010 through 2021 the US Mint is issuing commemorative quarters with special reverse designs celebrating National Parks and other National Sites. A park or site is being honored in each of the 50 States, the District of Columbia, and the five US Territories: Puerto Rico, Guam, American Samoa, US Virgin Islands, and Northern Mariana Islands. Each National Park or National Site was selected for its natural or historical significance. The National Park Quarters are being minted and issued at the rate of 5 designs a year, in approximately ten week intervals. The National Park Quarters are being released in the order that the locations were first designated as National Sites. The Obverse side of the coins feature a smaller restoration of the original Washington Quarter portrait, modeled from designer John Flanagan's 1932 plaster. The Reverse of each coin will feature a representation of the unique character and environment of each State, District, or Territory's National Park or Historic Site.

Circulation strikes will be made at the Philadelphia (P) and Denver (D) Mints (starting in 2012 circulation strikes were also minted at the San Francisco (S) Mint). The San Francisco (S) mint will strike the BUs in clad composition and silver. Clad composition strikes contain an outer layer of 75% copper and 25% nickel bonded to an inner core of pure copper with a 24.33 mm diameter, 5.67 grams weight, and a reeded edge. The silver strikes will contain 90% silver and 10% copper with a 24.33 mm diameter, 6.25 grams weight, and a reeded edge.