{
  "comments": {
    "new": "Volume Label: ROL DISK 3"
  },
  "legacy": {
    "write_offset": {
      "new": "-12, 0",
      "old": "-12"
    }
  },
  "ring_codes": {
    "new": "X11-91193\t(HD211A) IFPI LB25 IFPI 4KCF\nX11-91193 R1N IFPI L250 17 IFPI 4152",
    "old": "X11-91193\t(HD211A) IFPI LB25 IFPI 4KCF"
  },
  "serial": {
    "new": "0206 Part No. X11-91192-01, 0206 Part No. X12-04352-01",
    "old": "0206 Part No. X12-04352-01"
  }
}