Vintage Singer Sewing Machine Parts & Accessories Box (401A Slantomatic)

Vintage Singer Sewing Machine plastic box with various parts and accessories. Singer markings. Box measures 7.75 inches by 5.5 inches by 2.4 inches. Good condition with sticker like substance on top where there had originally been Singer branding plate. Assorted sewing machine parts inside, which I believe work with the Singer 401A Slantomatic Machine, as shown in pics.