This is a limited edition m6 refill from Shoichiro Tobimatsu for the Kamihaku paper fair. It's unopened, so I can't count the sheets, but the official description doesn't state the number. I believe there are probably 20 sheets. Mr. Tobimatsu is in charge of the main visual. I will include one of the refills from the second photo until the total weight reaches 48g. I will offer a 100 yen discount for combined shipping. Available for immediate purchase.