"cost mark" meaning in English

{
  "forms": [
    {
      "form": "cost marks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cost mark (plural cost marks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1913, Credit & Financial Management, volume 13, page 789",
          "text": "The first was found to contain $10,000 of diamond mounted goods, each piece still being tagged with Shoop's private cost marks. The second package contained nine papers of loose diamonds, valued at $6,000, […]",
          "type": "quotation"
        },
        {
          "ref": "1922, The Jewelers' Circular, volume 85, number 1, page 89",
          "text": "82 assorted finger rings with various cost marks some of which are as follows: […]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Any of a series of usually arbitrary codes used by jewelers to communicate prices secretly."
      ],
      "id": "en-cost_mark-en-noun-R-KBw~at",
      "links": [
        [
          "series",
          "series"
        ],
        [
          "arbitrary",
          "arbitrary"
        ],
        [
          "code",
          "code"
        ],
        [
          "jeweler",
          "jeweler"
        ],
        [
          "communicate",
          "communicate"
        ],
        [
          "price",
          "price"
        ],
        [
          "secretly",
          "secretly"
        ]
      ]
    }
  ],
  "word": "cost mark"
}

{
  "forms": [
    {
      "form": "cost marks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cost mark (plural cost marks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1913, Credit & Financial Management, volume 13, page 789",
          "text": "The first was found to contain $10,000 of diamond mounted goods, each piece still being tagged with Shoop's private cost marks. The second package contained nine papers of loose diamonds, valued at $6,000, […]",
          "type": "quotation"
        },
        {
          "ref": "1922, The Jewelers' Circular, volume 85, number 1, page 89",
          "text": "82 assorted finger rings with various cost marks some of which are as follows: […]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Any of a series of usually arbitrary codes used by jewelers to communicate prices secretly."
      ],
      "links": [
        [
          "series",
          "series"
        ],
        [
          "arbitrary",
          "arbitrary"
        ],
        [
          "code",
          "code"
        ],
        [
          "jeweler",
          "jeweler"
        ],
        [
          "communicate",
          "communicate"
        ],
        [
          "price",
          "price"
        ],
        [
          "secretly",
          "secretly"
        ]
      ]
    }
  ],
  "word": "cost mark"
}