These are collectible cards for viewing and display. The size is 55mm x 91mm, the size of a business card. The back of the C series cards have the same specifications. Each card after the first is 1000 yen. Example: 2 cards for 2000 yen, 3 cards for 3000 yen. We also sell data on BOOTH. Search term: "Kagemi Nanami" Even sold-out items can be listed if stock is available. Returns are not accepted after the product has been transferred. Thank you for your understanding.