"ΡΒ΄" meaning in Translingual

{
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "numeral"
      },
      "expansion": "ΡΒ΄",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "num",
  "senses": [
    {
      "alt_of": [
        {
          "word": "ρβ΄"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Translingual entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative form of ρβ΄"
      ],
      "id": "en-ΡΒ΄-mul-num--x9CU2KS",
      "links": [
        [
          "ρβ΄",
          "ρβ΄"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "ΡΒ΄"
}

{
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "numeral"
      },
      "expansion": "ΡΒ΄",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "num",
  "senses": [
    {
      "alt_of": [
        {
          "word": "ρβ΄"
        }
      ],
      "categories": [
        "Greek numerals",
        "Pages with 1 entry",
        "Pages with entries",
        "Translingual entries with incorrect language header",
        "Translingual lemmas",
        "Translingual numerals",
        "Translingual terms spelled with ΄",
        "Translingual terms spelled with Β",
        "Translingual terms spelled with Ρ"
      ],
      "glosses": [
        "Alternative form of ρβ΄"
      ],
      "links": [
        [
          "ρβ΄",
          "ρβ΄"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "ΡΒ΄"
}