From 1995. Originally there were two books, and although they have been used and reduced, I think there is more than one book's worth left. Please check the remaining amount in the photos. The paper is thick and of good quality. There are stains on the sides due to aging. There may be other deterioration and damage. Please understand that this is a retro item. Sanrio, Sanrio, nostalgic, rare, Showa retro Hello Kitty, Hellokitty, Kitty-chan