The 2018 S Cumberland Island National Seashore 90% Silver Quarter is a stunning coin featuring a Reverse Proof strike type, with a Gem DCam grade. This uncirculated coin, part of the America the Beautiful series, bears the certification number of a raw coin and has a precious metal content of 0.18oz. Minted in San Francisco, this United States coin showcases the beauty of Cumberland Island in a 25 cent denomination.