CREATE TABLE table_name_74 (points VARCHAR(255), year VARCHAR(255), entrant VARCHAR(255), chassis VARCHAR(255))
What is the number of points for the Entrant of wolfgang seidel and a Cooper t45 chassis later than 1960?
    
SQL: SELECT COUNT(points) FROM table_name_74 WHERE entrant = "wolfgang seidel" AND chassis = "cooper t45" AND year > 1960