Appraisily research · checked October 27, 2026

Strong versus weak comparables: relevance is not one number

This bounded audit revisits the four different-artist sale comparisons on pages 2–3 of one public Appraisily sample report. The report assigned case-specific relevance scores from 81 to 72. A new source check retrieved two auction-house lot pages; two rows remain report-only transcriptions. The result is a practical distinction: match relevance and source auditability are separate axes, and neither turns a comparable into a universal valuation formula.

What “stronger” means in this one report

The public sample lists relevance scores of 81, 79, 77, and 72. For this audit, 81 and 79 are described only as the stronger two within that report, and 77 and 72 as the weaker two. The labels preserve the report order; they do not reveal a formula. A useful comparable still has to be read across artist or attribution, subject and composition, medium and support, size, condition, provenance, venue, date, and price basis.

  • ✓4 selected different-artist rows
  • ✓Case-specific scores: 81, 79, 77, and 72
  • ✓Observed score spread: 9 points
  • ✓0 rows are by the same artist as the described subject

Auditability changes the evidence conversation

The Thomas Sidney Cooper row has the highest report score, but this audit did not retrieve its original auction-house page and the sample does not state dimensions. The Hendrikus van de Sande Bakhuyzen and Franz van Severdonck rows have original-host pages that support core metadata and reported amounts. The Matthijs Quispel row remains a report-only transcription. That pattern is why relevance and auditability should not be collapsed into one confidence number.

  • ✓2 original-host rows retrieved and checked
  • ✓2 report-only transcriptions
  • ✓Highest relevance score does not mean strongest source trail
  • ✓Missing fields remain missing rather than inferred

Two verified rows, two different price bases

AAG identifies lot 44 as an oil-on-panel work measuring 38.5 × 52.8 cm and labels €2,500 as the Hammer amount. Its current lot page displays June 25, 2017, while the sample report transcribes June 26; the one-day discrepancy remains visible. Bonhams identifies lot 27 as an oil-on-panel work measuring 45 × 66.5 cm and states that it sold for £5,250 including premium. Those figures cannot be treated as the same basis.

  • ✓AAG: €2,500 hammer amount
  • ✓AAG date: source page June 25; report June 26
  • ✓Bonhams: £5,250 including premium
  • ✓No cross-currency or raw-price ranking

Method, interpretation, and limitations

The audit transcribed the sample, searched for auction-house records, and accepted an original-host page as primary support when retrieved. It did not substitute commercial discovery databases for original records. Condition, restoration, provenance, attribution strength, and fee basis are not consistently available across all four rows. No FX, inflation, price-per-area, market-growth, or authentication adjustment is calculated, and the audit does not retest the report value conclusion.

  • ✓Company-authored research by Appraisily
  • ✓Source pages and calculations checked October 27, 2026
  • ✓Selected case audit, not a representative cohort
  • ✓Not an appraisal, formula, market index, or independent validation

How to use this page before ordering

This page gives search engines and visitors the same practical orientation: what the route is for, what evidence matters, and which next step best matches the appraisal decision.

Four selected rows, not a market cohort

The records were chosen for one report case. They do not represent all sales, validate the report conclusion, or appraise another object.

Relevance differs from auditability

The highest-scored row remains report-only in this audit, while the second- and third-scored rows have retrievable original-host evidence.

Price bases and currencies stay separate

AAG labels €2,500 as hammer; Bonhams states £5,250 including premium. GBP, EUR, and USD results are not ranked or silently converted.

Questions people ask

What makes a comparable stronger or weaker?

For one assignment, relevance can depend on artist or attribution, subject, composition, medium, support, size, condition, provenance, venue, date, and price basis. A strong source trail is a separate question from how closely the object matches.

Do the relevance scores create a valuation formula?

No. The scores of 81, 79, 77, and 72 are case-specific professional judgments preserved from one public sample report. They are not a validated universal scale, a price adjustment, or an authentication probability.

Can the four sale prices be ranked against each other?

No. The rows use GBP, EUR, and USD, and price bases are inconsistent. AAG labels its €2,500 result as hammer, while Bonhams states £5,250 including premium. No FX or inflation conversion is applied.

Which rows were checked on original auction-house pages?

The AAG Auctioneers Bakhuyzen lot and Bonhams Severdonck lot were retrieved and checked. The Cooper and Quispel rows remain report-only transcriptions in this audit.

Why are two dates shown for the AAG row?

The sample report transcribes June 26, 2017, while the current AAG lot page visibly displays June 25. The one-day discrepancy is unresolved and retained instead of silently normalized.

Can I inspect the audit data?

Yes. The page links to a four-row CSV, a JSON file containing the method and limitations, the public sample report, and the two original-host lot pages. Source pages and calculations were checked October 27, 2026.