{
  "schemaVersion": "1.0",
  "articleSlug": "unlocking-the-secrets-of-rare-marbles-a-collectors-guide-to-determining-value-and-rarity",
  "topic": "antique marbles",
  "provenanceManifestSha256": "49cef55f2bacf948d351076f310fb47875faf6808be1ccc6d47704b0aec8f172",
  "comparables": [
    {
      "compId": "comp-1160a28cc024d780",
      "title": "Antique Marbles",
      "auctionHouse": "Dovetail Auctions, LLC",
      "saleDate": "2024-08-30",
      "lotNumber": "32",
      "price": {
        "amount": 60,
        "currency": "USD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/antique-marbles-32-c-3084c37bd8/",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "Dovetail Auctions, LLC|2024-08-30T05:00:00.000Z|32",
      "retrievedAt": "2026-10-13T07:43:59.442Z",
      "sourceAccess": {
        "status": "challenged",
        "reachableAtCollection": false
      },
      "verificationStatus": "live_source_blocked_pipeline_provenance_matched",
      "rawRecordSha256": "cd15da1f595f92a972257cb6efd3e6a9069b5a67d329b3dfefe619727588de01",
      "provenanceManifestSha256": "49cef55f2bacf948d351076f310fb47875faf6808be1ccc6d47704b0aec8f172",
      "auctionPhotoSupplied": true
    },
    {
      "compId": "comp-494f88f296a4c88d",
      "title": "Antique Marbles",
      "auctionHouse": "Mike Nichols Auctions",
      "saleDate": "2025-02-02",
      "lotNumber": "1153",
      "price": {
        "amount": 10,
        "currency": "USD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/antique-marbles-1153-c-61a4b928e0/",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "Mike Nichols Auctions|2025-02-02T01:00:00.000Z|1153",
      "retrievedAt": "2026-10-13T07:43:59.525Z",
      "sourceAccess": {
        "status": "challenged",
        "reachableAtCollection": false
      },
      "verificationStatus": "live_source_blocked_pipeline_provenance_matched",
      "rawRecordSha256": "675b7458ee7dab9a9f272a80a7896651aecd101991070ea70411786c93886165",
      "provenanceManifestSha256": "49cef55f2bacf948d351076f310fb47875faf6808be1ccc6d47704b0aec8f172",
      "auctionPhotoSupplied": true
    },
    {
      "compId": "comp-d1958499ca62051c",
      "title": "Antique Marbles",
      "auctionHouse": "Davis Brothers Auction",
      "saleDate": "2025-01-10",
      "lotNumber": "567",
      "price": {
        "amount": 130,
        "currency": "USD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/antique-marbles-567-c-71744f3858/",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "Davis Brothers Auction|2025-01-10T09:00:00.000Z|567",
      "retrievedAt": "2026-10-13T07:43:59.419Z",
      "sourceAccess": {
        "status": "challenged",
        "reachableAtCollection": false
      },
      "verificationStatus": "live_source_blocked_pipeline_provenance_matched",
      "rawRecordSha256": "34329ffc4d8cd6ff68bf4a639951e3706c95947eef65467548df4583b9d500ce",
      "provenanceManifestSha256": "49cef55f2bacf948d351076f310fb47875faf6808be1ccc6d47704b0aec8f172",
      "auctionPhotoSupplied": true
    },
    {
      "compId": "comp-c5d8048ce09ea4d5",
      "title": "SIX ANTIQUE MARBLES",
      "auctionHouse": "Casco Bay Auctions",
      "saleDate": "2025-11-22",
      "lotNumber": "503",
      "price": {
        "amount": 220,
        "currency": "USD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/six-antique-marbles-503-c-7d93d4f3f3/",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "Casco Bay Auctions|2025-11-22T10:00:00.000Z|503",
      "retrievedAt": "2026-10-13T07:43:59.410Z",
      "sourceAccess": {
        "status": "challenged",
        "reachableAtCollection": false
      },
      "verificationStatus": "live_source_blocked_pipeline_provenance_matched",
      "rawRecordSha256": "150586df58e268eef20fcfd244a3aa3d45a5583d98a9c56e04f4207f0f5ee871",
      "provenanceManifestSha256": "49cef55f2bacf948d351076f310fb47875faf6808be1ccc6d47704b0aec8f172",
      "auctionPhotoSupplied": true
    },
    {
      "compId": "comp-28792ffb8b15a0b2",
      "title": "[Clay, Bennington, Antique Marbles] Group Marbles",
      "auctionHouse": "Grant Zahajko Auctions, LLC",
      "saleDate": "2025-12-10",
      "lotNumber": "153F",
      "price": {
        "amount": 30,
        "currency": "USD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/clay-bennington-antique-marbles-group-marbles-153f-c-1a0c359efe/",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "Grant Zahajko Auctions, LLC|2025-12-10T09:00:00.000Z|153F",
      "retrievedAt": "2026-10-13T07:43:59.447Z",
      "sourceAccess": {
        "status": "challenged",
        "reachableAtCollection": false
      },
      "verificationStatus": "live_source_blocked_pipeline_provenance_matched",
      "rawRecordSha256": "22120d6eeddef180c7214a85f9a3f50ef09ffbd642ccd7eaa7d123049bbc9987",
      "provenanceManifestSha256": "49cef55f2bacf948d351076f310fb47875faf6808be1ccc6d47704b0aec8f172",
      "auctionPhotoSupplied": true
    },
    {
      "compId": "comp-ff2c2520e96a1b73",
      "title": "antique marbles total of 22 toy marble 5/8\" swirl",
      "auctionHouse": "A KLEINS AUCTION GALLERY LLC",
      "saleDate": "2023-05-21",
      "lotNumber": "4783",
      "price": {
        "amount": 16,
        "currency": "USD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/antique-marbles-total-of-22-toy-marble-5-8-swirl-4783-c-5624d88ac5/",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "A KLEINS AUCTION GALLERY LLC|2023-05-21T06:30:00.000Z|4783",
      "retrievedAt": "2026-10-13T07:43:59.796Z",
      "sourceAccess": {
        "status": "challenged",
        "reachableAtCollection": false
      },
      "verificationStatus": "live_source_blocked_pipeline_provenance_matched",
      "rawRecordSha256": "4dec7ad1b45390e004ad30786f949fe021696c6c61f29197b8c111fa66417bda",
      "provenanceManifestSha256": "49cef55f2bacf948d351076f310fb47875faf6808be1ccc6d47704b0aec8f172",
      "auctionPhotoSupplied": true
    },
    {
      "compId": "comp-746056d8309d3394",
      "title": "Group of antique clay marbles",
      "auctionHouse": "Schultz Auctioneers",
      "saleDate": "2026-03-21",
      "lotNumber": "1571",
      "price": {
        "amount": 150,
        "currency": "USD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/group-of-antique-clay-marbles-1571-c-c21193462c/",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "Schultz Auctioneers|2026-03-21T10:00:00.000Z|1571",
      "retrievedAt": "2026-10-13T07:44:00.358Z",
      "sourceAccess": {
        "status": "challenged",
        "reachableAtCollection": false
      },
      "verificationStatus": "live_source_blocked_pipeline_provenance_matched",
      "rawRecordSha256": "2ed9b81fe58d56c3b035eecd97951d5637e335b9181421ce71e4a2b9c4d3924d",
      "provenanceManifestSha256": "49cef55f2bacf948d351076f310fb47875faf6808be1ccc6d47704b0aec8f172",
      "auctionPhotoSupplied": true
    },
    {
      "compId": "comp-40b6af61581874bb",
      "title": "Assorted Antique & Vintage Marbles",
      "auctionHouse": "Keystone Auctions LLC",
      "saleDate": "2026-02-22",
      "lotNumber": "425",
      "price": {
        "amount": 50,
        "currency": "USD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/assorted-antique-vintage-marbles-425-c-4d6abdb456/",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "Keystone Auctions LLC|2026-02-22T09:00:00.000Z|425",
      "retrievedAt": "2026-10-13T07:44:00.368Z",
      "sourceAccess": {
        "status": "challenged",
        "reachableAtCollection": false
      },
      "verificationStatus": "live_source_blocked_pipeline_provenance_matched",
      "rawRecordSha256": "73c8f71d10ff3decf1f5e0ed06ae098be5305e1861a495a31948ff602c0eb9b6",
      "provenanceManifestSha256": "49cef55f2bacf948d351076f310fb47875faf6808be1ccc6d47704b0aec8f172",
      "auctionPhotoSupplied": true
    }
  ]
}