It doesn't look like a Pfaff, it does somewhat resemble my Elna cords, though this one is different. Necchi also has some cords that are similar to Elna, so it may be a Necchi, and Necchis had black machines, which this one would match with. The other brand that springs to mind are Penncrests (JC Penny machines). I have a couple that could be a match for this cord.