Kero Kero Keroppi business card set. Business cards: 20 Sticker: 1 - Character: Kero Kero Keroppi - Manufacturing year: 1988, 1991 Thank you for viewing. Unused, but stored at home for a long time. Please purchase only if you understand. Thank you very much (^-^). Retro Heisei Retro Heisei Sanrio SANRIO Rare