1891 Liberty Seated Quarter. Proof-66 (PCGS). CAC. Obviously stored for many years in a paper envelope, this gloriously toned specimen exhibits deep, rich, blue-russet patina on the obverse and reverse. Radiant mint reflectivity is best appreciated at more direct angles. Captivating Gem quality for this final year Proof issue in the long lived Liberty Seated quarter series.<p><br data-uw-rm-sr="" data-uw-styling-context="true" role="presentation" style="box-sizing:border-box;color:#333333;font-family:Avenir, Roboto, Helvetica Neue, Helvetica, Arial, sans-serif;font-size:14px;background-color:#ffffff;" /><p>