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    {
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    },
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      "url": "https://openproperties.uk/dn2/northumberland-avenue/58"
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      "url": "https://openproperties.uk/dn2/northumberland-avenue/60"
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    {
      "paon": "66",
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      "url": "https://openproperties.uk/dn2/northumberland-avenue/66"
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    {
      "paon": "68",
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      "last_price": 109500,
      "url": "https://openproperties.uk/dn2/northumberland-avenue/68"
    },
    {
      "paon": "70",
      "saon": null,
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      "last_sale_date": "2015-01-27",
      "last_price": 119000,
      "url": "https://openproperties.uk/dn2/northumberland-avenue/70"
    },
    {
      "paon": "72",
      "saon": null,
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      "url": "https://openproperties.uk/dn2/northumberland-avenue/72"
    }
  ],
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains HM Land Registry data © Crown copyright and database right. This data is licensed under the Open Government Licence v3.0.",
  "provenance": {
    "source": "HM Land Registry Price Paid Data",
    "source_url": "https://www.gov.uk/government/statistical-data-sets/price-paid-data-downloads",
    "retrieved_at": null
  }
}