{
  "schemaVersion": "1.0",
  "articleSlug": "a-glass-amphora-vase-by-borek-sipek",
  "topic": "borek sipek",
  "provenanceManifestSha256": "311de5c47acda9024b1a0aacaddc077f99f28f1c30f4510038b4bc2fa3274200",
  "comparables": [
    {
      "compId": "comp-9a7036cf0143be92",
      "title": "Borek Sipek - Vase",
      "auctionHouse": "Barton's Auction",
      "saleDate": "2023-07-30",
      "lotNumber": "403",
      "price": {
        "amount": 350,
        "currency": "USD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/borek-sipek-vase-403-c-ef643a899c/",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "Barton's Auction|2023-07-30T10:00:00.000Z|403",
      "retrievedAt": "2026-10-21T07:00:23.001Z",
      "sourceAccess": {
        "status": "async_response",
        "reachableAtCollection": true
      },
      "verificationStatus": "live_source_blocked_pipeline_provenance_matched",
      "rawRecordSha256": "44ee73e3823639b999ef6ddbcfbcb5e0e22dac306ae636280c8fc2a76ee16ba0",
      "provenanceManifestSha256": "311de5c47acda9024b1a0aacaddc077f99f28f1c30f4510038b4bc2fa3274200",
      "auctionPhotoSupplied": true
    },
    {
      "compId": "comp-efa363a3017e1b75",
      "title": "Borek Šípek (1949-2016) Vase - ‘Alioscila’ model",
      "auctionHouse": "Piasa",
      "saleDate": "2026-03-18",
      "lotNumber": "65",
      "price": {
        "amount": 500,
        "currency": "EUR"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/borek-sipek-1949-2016-vase-alioscila-model-65-c-a78cb7e905/",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "Piasa|2026-03-18T05:00:00.000Z|65",
      "retrievedAt": "2026-10-21T07:00:29.217Z",
      "sourceAccess": {
        "status": "async_response",
        "reachableAtCollection": true
      },
      "verificationStatus": "live_source_blocked_pipeline_provenance_matched",
      "rawRecordSha256": "c76a7c81ac322400025c547a139c1cc2395694786155051b03d9dac8c4a9d783",
      "provenanceManifestSha256": "311de5c47acda9024b1a0aacaddc077f99f28f1c30f4510038b4bc2fa3274200",
      "auctionPhotoSupplied": true
    },
    {
      "compId": "comp-014ebc4d36766702",
      "title": "Borek Sipek - Vase",
      "auctionHouse": "Finarte",
      "saleDate": "2021-10-26",
      "lotNumber": "229",
      "price": {
        "amount": 90,
        "currency": "EUR"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/borek-sipek-vase-229-c-4c741cdbc7/",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "Finarte|2021-10-26T04:00:00.000Z|229",
      "retrievedAt": "2026-10-21T07:00:23.079Z",
      "sourceAccess": {
        "status": "async_response",
        "reachableAtCollection": true
      },
      "verificationStatus": "live_source_blocked_pipeline_provenance_matched",
      "rawRecordSha256": "f9328c7c66f41b4095b57f036501c56603992e3942bb09d68b42f5d34b63424c",
      "provenanceManifestSha256": "311de5c47acda9024b1a0aacaddc077f99f28f1c30f4510038b4bc2fa3274200",
      "auctionPhotoSupplied": true
    },
    {
      "compId": "comp-9a5395fd3a80559e",
      "title": "A Vintage Borek Sipek 'Celine' Vase",
      "auctionHouse": "Webb’s – Specialist Auctioneers",
      "saleDate": "2022-08-28",
      "lotNumber": "98",
      "price": {
        "amount": 425,
        "currency": "NZD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/a-vintage-borek-sipek-celine-vase-98-c-aed42d596d/",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "Webb’s – Specialist Auctioneers|2022-08-28T02:30:00.000Z|98",
      "retrievedAt": "2026-10-21T07:00:22.944Z",
      "sourceAccess": {
        "status": "async_response",
        "reachableAtCollection": true
      },
      "verificationStatus": "live_source_blocked_pipeline_provenance_matched",
      "rawRecordSha256": "16d7c5cf32e37f26f31afffbceaef718934abd44146ba3c5ea97e182f59a077e",
      "provenanceManifestSha256": "311de5c47acda9024b1a0aacaddc077f99f28f1c30f4510038b4bc2fa3274200",
      "auctionPhotoSupplied": true
    },
    {
      "compId": "comp-b834b2909260ad55",
      "title": "A Borek Sipek Crystal Amelia Vase",
      "auctionHouse": "Abell Auction",
      "saleDate": "2025-05-15",
      "lotNumber": "344",
      "price": {
        "amount": 125,
        "currency": "USD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/a-borek-sipek-crystal-amelia-vase-344-c-1854378b24/",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "Abell Auction|2025-05-15T09:00:00.000Z|344",
      "retrievedAt": "2026-10-21T07:00:23.027Z",
      "sourceAccess": {
        "status": "async_response",
        "reachableAtCollection": true
      },
      "verificationStatus": "live_source_blocked_pipeline_provenance_matched",
      "rawRecordSha256": "6180b6f1b25a04fbfec7d1138d77c1e79c8cc5a4bb56d5bc60b905ad1331918a",
      "provenanceManifestSha256": "311de5c47acda9024b1a0aacaddc077f99f28f1c30f4510038b4bc2fa3274200",
      "auctionPhotoSupplied": true
    }
  ]
}
