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_2409041_3 ( production_code VARCHAR, no_in_series VARCHAR )

### Question ###
How many production codes were in series 39?

### Accurate SQL ###

SELECT COUNT(production_code) FROM table_2409041_3 WHERE no_in_series = 39