KOKUYO Invoice UKE-56 Set of 4 ① These have been stored in a warehouse for a long time, and I don't know when they were made. They seem to be usable, but the bottom two are slightly warped. There may be other defects that I haven't noticed. Please consider this before purchasing. The items will be protected from rain and shipped in simple packaging. Please refrain from purchasing if you are sensitive to items stored at home.