The D probably stands for German, on the Gebrwuchsanleitung it only says 3323.
All-purpose foot, zipper foot, buttonhole foot, brush/seam ripper, edge/quilt guide, needle assortment, large and small thread holder, bobbins, screwdriver, darning plate, additional thread holder. small thread holder, bobbins, screwdriver, darning plate, additional thread holder, felt disc for thread holder, protective cover. A further 11 accessories must be ordered separately as special accessories, e.g. decorative stitch foot, overlock foot, hem foot, cord foot, blind hem foot, etc.