【If you request a bulk purchase, it's 200 yen off for each additional item】 This is a commemorative medal of butterflies from the Tokyo National Museum of Nature and Science. If you would like to purchase a gold keychain, please comment. The gold keychain is an additional 100 yen per piece. After purchase, it has been stored in a coin case. Please consider purchasing with the understanding that it is stored by an amateur. #CommemorativeMedal #NationalMuseumOfNatureAndScience