Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_15423 ( "Year" real, "Entrant" text, "Chassis" text, "Engine" text, "Points" real )

### Question ###
What is the number of points for the Entrant of wolfgang seidel and a Cooper t45 chassis later than 1960?

### Accurate SQL ###

SELECT COUNT("Points") FROM table_15423 WHERE "Entrant" = 'wolfgang seidel' AND "Chassis" = 'cooper t45' AND "Year" > '1960'