Effigy Mounds National Monument preserves over 200 prehistoric burial and ceremonial mounds along the Upper Mississippi River bluffs, many constructed by Indigenous peoples between roughly 400 and 1400 AD. The site's inclusion in the America the Beautiful quarter program reflected a broader push — contested in some numismatic circles as overreach — to represent federally protected natural and cultural lands alongside the more expected national parks.
The .900 silver proof version was struck at San Francisco, where all silver proof ATB quarters have been produced since the series launched in 2010.
Effigy Mounds National Monument preserves over 200 prehistoric burial and ceremonial mounds along the Upper Mississippi River bluffs, many constructed by Indigenous peoples between roughly 400 and 1400 AD. The site's inclusion in the America the Beautiful quarter program reflected a broader push — contested in some numismatic circles as overreach — to represent federally protected natural and cultural lands alongside the more expected national parks.
The .900 silver proof version was struck at San Francisco, where all silver proof ATB quarters have been produced since the series launched in 2010.