Hi, you are bidding on a terrific old book set that is printed in German: 2 volume set 593 pages and 531 pages/1902 Die Physikalischen Methoden by Dr. Wilhelm Vaubel.Both books are in great condition.The only writing in the book is on the first blank page on the top right someone has written in pencil a price.The books are nice and straight and not warped or curved.The pages are all tight in the binder and are not stained or creased nor ripped nor torn! This was printed on very good paper,there is only slight discoloration around the borders of the pages.The pages are very distinct clear and strong.The only moisture marks I see are on the outside edges (red part) on the pages very outer edges you can see them in my photos.These do not continue to the innerside pages.I have given you a good description of the books but if you are still uncertain of anything,I welcome all questions.Vintage antiques sold as is.Please have a look at my feedbacks and bid with confidence.Thank you and shipping is to worldwide.