PHILIPPINES. Duo of 10 Centavos & Centavo (2 Pieces), 1918-66. Both NGC Certified.An interesting pair of distinctive issues that spans Filipino independence.1) Mint Error -- Struck 10% Off-Center -- 10 Centavos, 1966. MS-66. KM-188.2) Centavo, 1918-S. San Francisco Mint. AU-55. KM-163; Allen-2.16.