Onion skin paper is so called because of its resemblance to the skin of an onion. It its lightweight thin and transparent. It is a good quality paper, used for the reproduciton, such as in this case, an calligraphy by Nankoku Hidai. It had folds, oxidation, discolouration, cockling, a pressure sensitive tape at the right bottom corner, stains, tears and tattered edges. Paper hinges have been added to mou it on a conservation board for framing purposes.