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_2030453_1 (date_motor_gear_fitted VARCHAR, lms_1946_no VARCHAR)

### Question ###
When was the motor gear of the LMS 1946 no. 1901 model fitted?

### Accurate SQL ###

SELECT date_motor_gear_fitted FROM table_2030453_1 WHERE lms_1946_no = 1901