Question: What is the lowest mintage in a year earlier than 2005?
SQL: SELECT MIN("Mintage") FROM "2-11916083-42" WHERE "Year" < 2005.0;

Question: What is the sum of all mintage created by Pierre Leduc?
SQL: SELECT SUM("Mintage") FROM "2-11916083-42" WHERE "Artist" = 'Pierre Leduc';