I received these from my mother-in-law, who is very particular about education, for my grandchild. However, it's still a while before they'll be able to use them, and I have a lot, so I'm putting them up for sale, planning to buy more little by little when the time comes. There are 47 in total. 38 are new and unopened. 9 are opened, having been viewed once or a few times. The items circled in white on the first image (and similarly in the fourth image) have been opened. You can find more details on the NIKK website. My mother-in-law, who raised all her children to be excellent (unlike me!), recommended these, so I'm sure they're good! (^人^)