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_15635768_1 ( no_stamps_in_sheet VARCHAR, face_value VARCHAR, printer VARCHAR )

### Question ###
How many stamps have a face value of 37 and were printed in the banknote corporation of america?

### Accurate SQL ###

SELECT COUNT(no_stamps_in_sheet) FROM table_15635768_1 WHERE face_value = "37¢" AND printer = "Banknote Corporation of America"