1881 Liberty Seated Quarter. Proof-66 Cameo (PCGS).;A medley of sapphire hues paints the obverse of this gorgeous Cameo Gem, greeted by a fully blast white brilliance dazzling across the reverse. The cameo contrast on the reverse is exceptional, showcasing deeply mirrored fields and richly frosted devices. The contrast on the obverse is subtle though still present, delivering a wonderful display beneath a light source.