{
  "comments": {
    "new": "Volume Label: STEEL2\n\nISBN: 0-917059-55-7",
    "old": "ISBN: 0-917059-55-7"
  },
  "ring_codes": {
    "new": "wea mfg. commerce\tB2481 DJ 220931-2\tR72 *M1 S2",
    "old": "wea mfg. commerce\tB2481 DJ 220931-2\tR72 ӿM1\tS2"
  }
}