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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryRetail & CommerceRetail - General Specialty TradeWinterthurARTES Ioan Gramatic
ARTES Ioan Gramatic Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of the company "Artes fine violins" is the trade and sale of high-quality stringed instruments, particularly violins, violas and cellos, as well as consulting and supporting musicians and investors in all matters related to the purchase, sale and ownership of these instruments. The company also offers services such as purchasing, sales, auctions, investment partnerships, rental options and the brokerage of instrument maker's accessories.

AI-generated
Offering

Products & services

Industry:Retail - General Specialty Trade
✓ Offered11
String Instruments
Sale and rental of violins, violas and cellos, including as historical instruments, new-build instruments and silent or electric violins.
Bow Rehairing and Bows
Sale of bows for violins, violas and cellos, with historical and contemporary bows on request, as well as rental included in the instrument package.
Accessories
Sale of accessories for string instruments, including cases, strings and violin cases from various manufacturers and models.
Purchase & Sale
Direct purchase, private sale and consignment sale of fine Italian instruments and French bows, with advice for handling the sale.
Expertise, Appraisals and Certificates
Oral and written appraisals, certificates and external or in-house evaluations for instruments and bows, including with dendrochronology or CT.
Repairs and Restorations
Repairs, overhauls and restorations of string instruments and bows, on request also before sale or brokerage.
Sound Optimisations
Sound optimisations for string instruments and bows to improve playability and sound quality.
Sales Consulting and Brokerage
Individual sales consulting, active support in finding instruments or bows, and brokerage to potential customers.
Rental Instruments
Rental of violins, violas and cellos in various sizes, including bow, case, shoulder rest and rosin.
Investment in String Instruments
Advisory services for investing in high-quality string instruments and bows, including market assessment, selection, processing and long-term support.
360° HD Images
Creation of professional 360° HD images and detailed photos for violins, violas, cellos and bows for presentation and marketing.
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4.2/5

ARTES Ioan Gramatic

Trust & reputation

ranQ Trust Score of ARTES Ioan Gramatic: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

ARTES Ioan Gramatic scores 79.9 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.80.424%
  • 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.72.110%
  • 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.88.08%
ARTES Ioan Gramatic scores 76.4 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.95.212%
  • 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.55.07%
ARTES Ioan Gramatic 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%
ARTES Ioan Gramatic scores 12.0 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 35.12.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

ARTES Ioan Gramatic reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.8 out of 5 stars from 16 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
4.8
of 5

Aggregated from 16 reviews across all connected sources

Sources
GGoogle4.816
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Mulchlingerstrasse 107
8405 Winterthur
Opening hours
Mon
24h
Tue
24h
Wed
24h
Thu
24h
Fri
24h
Sat
24h
Sun
24h

At a glance

Legal form
Sole proprietorship
UID
CHE-400.767.026
Founded
2013 · 13 years
Last commercial register change
June 27, 2013
Employees
1 to 10
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.
67.0
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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