A notebook with 50 sheets of high-quality A4 size paper with 1mm grid lines. - Size: A4 - Number of sheets: 50 - Grid size: 1mm (250 x 180) - Brand: Kokuyo Ho-19 - High-quality paper - Unused Some notebooks have slight folds on the edges of the cover. Some have small stains on the back of the last 2-3 pages (Photos 11-14). It is believed that there will be no problem with use. Please understand that this is an old item from the Showa era and there is some age-related deterioration before purchasing. This is a set of 5 notebooks.