Pfaff 31 Sewing Machine Manual : Pfaff : Free Download, Borrow, and Streaming : Internet Archive
PFAFF 31 Zentralschiffnähmaschine mit Zubehör | eBay
Threading the Pfaff 30 31 - YouTube
Old sewing machine. This looks like a Pfaff 31, with what I call "The Golden Chrysanthemum" De… | Old sewing machines, Antique sewing machines, Pfaff sewing machine