From 2006 to 2008 and beginning again in 2011, the United States Mint issued a collectible uncirculated Silver Eagle coin produced at West Point (bearing the "W" mintmark). The coins are struck on specially burnished blanks and sometimes are referred to as "W Uncirculated" or "Burnished Uncirculated".Aside from the standard-issue burnished Eagles, there has been one burnished Eagle issue produced at San Francisco bearing the "S" mintmark for release in the "American Eagle 25th Anniversary Silver Coin Set" in 2011.
this 2022 West Point American Silver Burnished Eagle has been graded a Perfect SP70 by ANACS