Vintage Southworth Watermark Electronic Paper. This premium, specialty made paper contains a 25% cotton fiber content, offering a professional texture and weight for high-quality printing. It is specially designed for all electronic printer and reproduction devices, including Daisy Wheel, Dot Matrix, Ion Deposition, Ink Jet, Laser, Photocopiers, Electrophotographic, Impact, Non-Impact, and Xerography. Perfect for vintage office supply collectors, professional letterhead, resume printing, or premium legal documents. The original box is completely factory sealed in its clear plastic shrink wrap, ensuring the sheets remain pristine, flat, and free from dust or moisture. There is some light storage wear to the edges of the box under the wrap as shown in pictures.