"OK Fools" is Japan's first "Fools Paper" developed by Peng Paper Industry (formerly Kikuta Paper Store). "Fools paper" is synonymous with high-end writing paper. In the Meiji era, high-quality writing paper was imported from England, and it seems that the watermark of "clown / clown hat" was included. It was named "OK" because it was made at the Oji Paper Kokura Mill, but it is now made at the Nippon Paper Industries Yatsushiro Mill.
Paper density: 81.4g / ㎡ Size: A4 (210 × 297mm)
Quantity: 50 sheets
Paper comparison video: https://youtu.be/4ho_rir9xh0