National Museum of Nature and Science Stamp Unused Purchased several years ago. Since it is unopened, the condition of the ink has not been confirmed. Also, the seal on the outer vinyl is slightly peeling off and some dirt can be seen. Please note that the appearance in the photos may differ from the actual product. You can purchase without comment. If you have any concerns or if you would like to see more detailed photos, please feel free to comment. It will be shipped via Mercari delivery service.