1876 Twenty-Cent Piece. Proof-63 (PCGS). CAC. OGH--First Generation. From the United States Centennial year comes this fully struck Proof dusted with pale silvery iridescence. A cameo finish goes unmentioned on the old style PCGS insert which, when combined with the CAC sticker, confirms the premium quality nature of this offering. PCGS# 5304. NGC ID: 27H3.