50 sets of back carbon delivery notes, U-147N model. These were stored at my grandmother's shop. They are new and unused, still in their bags, but there is some yellowing and staining on the packaging due to long-term storage in the shop. Please be aware of this. There is no problem with the contents for use. There are 15 books in stock. If you would like to purchase multiple, please contact me in the comments. Also, I am selling other types of slips. If you would like to combine purchases, please contact me. Thank you for your understanding.