This is a clear ruler from the first generation of Tamagotchi. It's unclear whether the discoloration is due to aging or if it was originally this color. I opened it for the photos to check the condition, but I believe there are no issues as a ruler. Material: Acrylic Signs of aging, initial scratches, discoloration, scratches on the bag, and tearing upon opening. Price negotiations are not accepted. Please refrain from purchasing if you are looking for a pristine item, as this has been stored and inspected by an amateur. Shipping will be via Rakuraku Mercari Bin or Yu-Yu Mercari Bin. Type of writing instrument...Other #HeiseiRetro