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_name_1 ( works_number INTEGER, date VARCHAR, number VARCHAR, type VARCHAR )

### Question ###
Which Works number has a Number larger than 807, and a Type of 0-6-0, and a Date of 1920?

### Accurate SQL ###

SELECT AVG(works_number) FROM table_name_1 WHERE number > 807 AND type = "0-6-0" AND date = 1920