Watch List notes:

Various Countries - Silver - 15 coins - Olimpíadas Históricas; Helsinki 1952, Tokyo 1964, Mexico City 1968, Munich 1972, Montreal 1976, Moscow 1980, Los Angeles 1984, Seoul 1988, Barcelona 1992, Atlanta 1996, Sydney 2000, Athens 2004, Beijing 2008, London 2012, Rio de Janeiro 2016; 11 certificates; PROOF and BNC