{
  "legacy": {
    "build_date": {
      "new": "1993-08",
      "old": "1993-08-19"
    }
  },
  "ring_codes": {
    "new": "SEGA4423 R2D\tMFD BY JVC 13, 23\nSEGA4423RE R2D\tMFD BY JVC 12",
    "old": "SEGA4423 R2D\tMFD BY JVC 23\nSEGA4423RE R2D\tMFD BY JVC 12"
  }
}