CUBA. Duo of Cuban Silver Minors (2 Pieces), 1952-53. Philadelphia Mint. Both PCGS Certified.1) 10 Centavos, 1952. PCGS MS-64. KM-23. Commemorating the 50th Anniversary of the Republic of Cuba. 2) 25 Centavos, 1953. PCGS MS-63. KM-27. Commemorating the 100th Anniversary of the Birth of Jose Marti.