1864 Liberty Seated Quarter. Proof-66 (NGC). This lovely upper end Gem is dusted with pleasingly original toning in dominant pearl-gray and olive-russet. Direct lighting calls forth not only iridescent undertones of vivid apricot, pink and powder blue, but also intense mirrored reflectivity from the fields. Fully struck with superior surface preservation and strong visual appeal. The elusive nature of this years circulation strike quarter from the Philadelphia Mint further enhances the significance of this conditionally rare survivor of the dates 470-piece Proof issue.