Thank you for looking. These buttons were collected by my family at my parents' home, but I am selling them because I have stopped dressmaking. I believe they are Akoya shell buttons, but I am not certain, so please forgive me if I am mistaken. Since they are made from natural shells, each one has a different curve and thickness. Also, there is one button with a raised area on the surface, but this is from the beginning. Therefore, I have listed them as having some scratches and stains. Please refrain from purchasing if you are concerned. Please consider this item with the understanding that it has been stored at home. They will be sent via simple packaging using Yu-packet Post Mini or Nekopos. Thank you.