Purchased new, stored in a dark place. There is yellowing, staining, and minor scratches due to aging. The surface of the books is mostly clean, but there are stains on the inside of the covers and on the covers themselves (images 11 and 12) on most of the books. All volumes except for volumes 6 and 7 have obi (some obi have folds and tears). Volumes 13-18 are first editions (with advertisements). This is a used item. Please understand this before purchasing.