Vintage Singer Rocketeer sewing machine brown bakelite foot pedal / speed controller - It is compatible with the 500 / 500A and the 503 / 503A. Very nice vintage condition, bakelite is glossy with typical signs of use. Good working order, has been cleaned, inspected and adjusted as needed. The original double lead cord is in good order. Original rubber feet intact. Simanco part #197629. Made in USA. *Please note that this pedal is a deep chocolate brown colored bakelite (not black as it may appear).