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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryRetail & CommerceArt & Antique TradeLe Grand-SaconnexDavid Feldman SA
David Feldman SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

David Feldman SA is a philatelic auction house that buys and sells stamps, covers and specialised collections. The company organises auctions, offers private treaty sales, and provides valuations and consignment services for collectors and vendors.

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Products & services

Industry:Art & Antique Trade
✓ Offered
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David Feldman SA

6
Stamp Auctions
Stamp auctions with on-site, telephone and online bids; auction series, catalogues, live bidding, auction results and previous auctions.
Private Treaty
Intermediation of stamps and philatelic items directly between collectors; sale and purchase of individual pieces, specialised collections, holdings and archives.
Estimates and Appraisals
Provisional and online assessments of stamps and collections; in person or from a distance, with feedback on the suitability of the items for auction.
Submission of Collections
Submission of stamp collections for auction; contract, shipping coordination, insurance, description, appraisal and marketing to a worldwide clientele.
Online and Live Bid Submission
Registration and bid submission before the auction, live online, in the saleroom or by telephone; including account opening, credit limit and bidding instructions.
Philatelic Advice
Expert assessment of stamps and collections, review of photos or scans, recommendation for auction or other routes to sale.
Trust & reputation

ranQ Trust Score of David Feldman SA: 4.7 out of 5.0

Trust Score4.7/ 5.0

Excellent

x

Data basis 96% · As of October 2026

David Feldman SA scores 94.6 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.92.324%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.100.010%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.95.08%
David Feldman SA scores 92.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.82.07%
David Feldman SA scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
David Feldman SA scores 100.0 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.100.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

David Feldman SA reaches a ranQ Trust Score of 4.7 out of 5.0 — rated «Excellent». The rating draws, among other things, on 4.9 out of 5 stars from 102 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.9
of 5

Aggregated from 102 reviews across all connected sources

Sources
GGoogle4.9102
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Chemin du Pavillon 2
1218 Le Grand-Saconnex
Opening hours
Mon
08:30 - 17:00
Tue
08:30 - 17:00
Wed
08:30 - 17:00
Thu
08:30 - 17:00
Fri
08:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-103.608.664
Founded
1984 · 42 years
Last commercial register change
December 23, 2024
Employees
21 to 50
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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