I used this for work, but no longer need it, so I'm selling it. There are no markings, writing, or creasing. It's in very good condition, but it's a used item stored by a private individual, so please be aware that there may be some minor scratches that I may have missed. "Issue-Driven: How to Start with Issues - The Simple Essence of Intellectual Production" Price: 1,800 yen + tax #book