Hitachi Metals Co., Ltd. Novelty Metal Card & Periodic Table - Learn by Arranging Not Available The cards contain element symbols and their explanations. Created by a metal specialist company, you can have fun while learning. The cards have not been used, but the periodic table has been opened several times, so there are creases and wrinkles. There appears to be a faint circle near the zinc. Please understand. Please refrain from purchasing if you are concerned, as this item has been stored at home.