{
  "edition": {
    "new": "Original"
  },
  "ring_codes": {
    "new": "10 OPCD 1630-2 SRC=01 M1S4, M1S6",
    "old": "10 OPCD 1630-2 SRC=01 M1S6"
  },
  "serial": {
    "new": "MK-4129, OPCD-1630",
    "old": "MK-4129"
  }
}