The 1991 S American Silver Eagle Proof is a highly sought-after coin among collectors and investors alike. This exquisite coin is made of .999 pure silver and has been certified by NGC with a PF69 Ultra Cameo grade. The design features the iconic Walking Liberty on the obverse and a heraldic eagle on the reverse. With its mirror proof finish and near-perfect grade, this coin is a must-have for any serious collector of American Silver Eagles.