{
  "schemaVersion": "1.0",
  "articleSlug": "how-to-identify-estate-jewelry-marks-materials-age-clues-and-common-mistakes",
  "topic": "estate brooch",
  "provenanceManifestSha256": "36b0fe3030d5521da6555ad91377a23615062f51d6d1e7100a9ccc585508c8ab",
  "comparables": [
    {
      "compId": "comp-cf9b86bbf5aa6916",
      "title": "Estate Gold on Sterling Silver Filigree Bow Brooch",
      "auctionHouse": "Greenwich Auction",
      "saleDate": "2022-02-22",
      "lotNumber": "432",
      "price": {
        "amount": 20,
        "currency": "USD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/estate-gold-on-sterling-silver-filigree-bow-brooch-432-c-6d04e14a3c/",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "Greenwich Auction|2022-02-22T12:00:00.000Z|432",
      "retrievedAt": "2026-10-13T10:31:14.795Z",
      "sourceAccess": {
        "status": "challenged",
        "reachableAtCollection": false
      },
      "verificationStatus": "live_source_blocked_pipeline_provenance_matched",
      "rawRecordSha256": "4f9de1f808034f2d55f61e37d99ff2d5dd257140ad8174c3618b55f1767e8df8",
      "provenanceManifestSha256": "36b0fe3030d5521da6555ad91377a23615062f51d6d1e7100a9ccc585508c8ab",
      "auctionPhotoSupplied": true
    },
    {
      "compId": "comp-86cbd870625c6fc0",
      "title": "Estate Retro 1940's 30 ct Citrine and Ruby 14K Yellow/Rose Gold Brooch",
      "auctionHouse": "Intervendue",
      "saleDate": "2024-11-21",
      "lotNumber": "171",
      "price": {
        "amount": 4000,
        "currency": "USD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/estate-retro-1940-s-30-ct-citrine-and-ruby-14k-yellow-rose-gold-brooch-171-c-e1f4cd2936/",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "Intervendue|2024-11-21T11:00:00.000Z|171",
      "retrievedAt": "2026-10-13T10:31:17.048Z",
      "sourceAccess": {
        "status": "challenged",
        "reachableAtCollection": false
      },
      "verificationStatus": "live_source_blocked_pipeline_provenance_matched",
      "rawRecordSha256": "26dfaf23366534ef8ee9df11dd37abf0bf837fa71845109bac6f897a7c53e3b0",
      "provenanceManifestSha256": "36b0fe3030d5521da6555ad91377a23615062f51d6d1e7100a9ccc585508c8ab",
      "auctionPhotoSupplied": true
    },
    {
      "compId": "comp-dbd3d7ba2afdabf3",
      "title": "vintage estate jewelry: owl pin brooch",
      "auctionHouse": "Yardley Antiques",
      "saleDate": "2018-09-10",
      "lotNumber": "15464",
      "price": {
        "amount": 6,
        "currency": "USD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/vintage-estate-jewelry-owl-pin-brooch-15464-c-a4f4f7494d/",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "Yardley Antiques|2018-09-10T07:00:00.000Z|15464",
      "retrievedAt": "2026-10-13T10:31:17.353Z",
      "sourceAccess": {
        "status": "challenged",
        "reachableAtCollection": false
      },
      "verificationStatus": "live_source_blocked_pipeline_provenance_matched",
      "rawRecordSha256": "4893f9af080871aed348c0d3b4b325856f797e0dcb2c52755fdab5668426ed1a",
      "provenanceManifestSha256": "36b0fe3030d5521da6555ad91377a23615062f51d6d1e7100a9ccc585508c8ab",
      "auctionPhotoSupplied": true
    },
    {
      "compId": "comp-4121c4c8396b2184",
      "title": "DUGGIN, SHAPPERE & CO. VICTORIAN OPAL AND SEED PEARL BROOCH Property from the Estate of a Private Sydney Collector",
      "auctionHouse": "Leonard Joel",
      "saleDate": "2024-06-05",
      "lotNumber": "130",
      "price": {
        "amount": 650,
        "currency": "AUD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/duggin-shappere-co-victorian-opal-and-seed-pearl-brooch-property-from-the-estate-of-a-private-sydney-collector-130-c-8a14b17a18/",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "Leonard Joel|2024-06-05T02:00:00.000Z|130",
      "retrievedAt": "2026-10-13T10:31:25.414Z",
      "sourceAccess": {
        "status": "challenged",
        "reachableAtCollection": false
      },
      "verificationStatus": "live_source_blocked_pipeline_provenance_matched",
      "rawRecordSha256": "019e387fe006784e760e3e301dfeca8fe32834c49538d4ceecf85ba302f6d056",
      "provenanceManifestSha256": "36b0fe3030d5521da6555ad91377a23615062f51d6d1e7100a9ccc585508c8ab",
      "auctionPhotoSupplied": true
    },
    {
      "compId": "comp-cc86c458e318a499",
      "title": "14K Gold Estate Cameo Brooch Pendant",
      "auctionHouse": "Greenwich Auction",
      "saleDate": "2015-12-13",
      "lotNumber": "49",
      "price": {
        "amount": 30,
        "currency": "USD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/14k-gold-estate-cameo-brooch-pendant-49-c-7234bebac1/",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "Greenwich Auction|2015-12-13T11:00:00.000Z|49",
      "retrievedAt": "2026-10-13T10:31:17.133Z",
      "sourceAccess": {
        "status": "challenged",
        "reachableAtCollection": false
      },
      "verificationStatus": "live_source_blocked_pipeline_provenance_matched",
      "rawRecordSha256": "a932a3b72fc430a5b8ca58f512acc66e4d0b1a6883de32bfbfa5266c15e26720",
      "provenanceManifestSha256": "36b0fe3030d5521da6555ad91377a23615062f51d6d1e7100a9ccc585508c8ab",
      "auctionPhotoSupplied": true
    },
    {
      "compId": "comp-cb4a9105c12c24e0",
      "title": "antique estate jewelry: mourning pin brooch",
      "auctionHouse": "Yardley Antiques",
      "saleDate": "2023-01-30",
      "lotNumber": "22325",
      "price": {
        "amount": 50,
        "currency": "USD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/antique-estate-jewelry-mourning-pin-brooch-22325-c-8ba44ef89b/",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "Yardley Antiques|2023-01-30T10:00:00.000Z|22325",
      "retrievedAt": "2026-10-13T10:31:17.390Z",
      "sourceAccess": {
        "status": "challenged",
        "reachableAtCollection": false
      },
      "verificationStatus": "live_source_blocked_pipeline_provenance_matched",
      "rawRecordSha256": "ff537b9224c60b0b47d4f715fe2136726da11b7d9a0c50e4dcfd29ffb569c801",
      "provenanceManifestSha256": "36b0fe3030d5521da6555ad91377a23615062f51d6d1e7100a9ccc585508c8ab",
      "auctionPhotoSupplied": true
    }
  ]
}