{
  "comments": {
    "new": "Volume Label: MF_DISC1_3_23_20"
  },
  "ring_codes": {
    "new": "METALFATIGUE1 R1J IFPI L239 13, 14 IFPI 4121",
    "old": "METALFATIGUE1 R1J IFPI L239 13 IFPI 4121"
  },
  "version": {
    "new": "1.00"
  }
}