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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryRetail & CommerceArt & Antique TradeZurichKoetser Gallery AG
Koetser Gallery AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Koetser Gallery is the trade of fine paintings. They offer consulting services to customers who are building their collection or require other art-related services, such as research, conservation, mediation, collection and logistics.

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Offering

Products & services

Industry:Art & Antique Trade
✓ Offered7
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3.9/5

Koetser Gallery AG

Old Master Paintings
Old Master Paintings with a focus on the Northern Renaissance and the Dutch Golden Age; current selection of paintings, inquiries regarding availability and price.
Advisory for Collectors
Advisory for building collections, selecting suitable paintings and representation at auctions; including valuation for investment, insurance, museum loans and estate matters.
Research
Research services for each painting, provenance checks and art-historical classification to secure the acquisition and document the works.
Conservation
Conservation and restoration of Old Master Paintings, including collaboration with restorers for the restoration and preservation of the works' condition.
Brokerage
Intermediation of paintings for sale, including assessment of market value, presentation and scheduling of consigned works.
Artworks Logistics
Advisory on shipping and export licences for art transactions, in particular for handling the purchase and transport of paintings.
Notable Sales
Documentation of selected sold works for museums, public institutions and private collections; reference list of completed art transactions.
Trust & reputation

ranQ Trust Score of Koetser Gallery AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Koetser Gallery AG scores 49.8 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.68.224%
  • 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.17.610%
  • 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.35.08%
Koetser Gallery AG scores 89.3 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.70.07%
Koetser Gallery AG 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%
Koetser Gallery AG scores 28.6 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 35.28.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Koetser Gallery AG reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 1 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
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Talstrasse 37
8001 Zurich
Opening hours
Mon
Closed
Tue
09:00 - 17:00
Wed
09:00 - 17:00
Thu
09:00 - 17:00
Fri
Closed
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-113.330.631
Founded
2006 · 20 years
Last commercial register change
December 13, 2018
Employees
11 to 20
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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