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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryRetail & CommerceRetail - Watches & JewelryRapperswil SgGrünenfelder & Co. Briefmarken
Grünenfelder & Co. Briefmarken Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The core activity of Grünenfelder & Co. consists of consulting, buying and selling stamps and coins, including appraisals and purchasing against immediate cash payment. The company operates a retail store in Rapperswil, where customers can receive consulting and sales of stamps and coins. Additionally, the company also offers the sale of old gold.

AI-generated
Offering

Products & services

Industry:Retail - Watches & Jewelry
✓ Offered5
Stamp dealing
Purchase and sale of stamps, advice for expanding the collection, appraisals, as well as purchase against immediate cash payment.
Coin dealing
Purchase and sale of coins, non-binding advice, appraisals, as well as purchase against immediate cash payment.
Scrap gold purchase
Purchase of scrap gold against immediate cash payment; the purchase remains open according to the notice on the website.
Franking stamps
Franking stamps below the postal rate in the Frankatur Shop, orderable by email, phone or via the shop.
Shipping of collectible items and accessories
Shipping of stamps, coins, catalogues and all accessories.
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4.1/5

Grünenfelder & Co. Briefmarken

Trust & reputation

ranQ Trust Score of Grünenfelder & Co. Briefmarken: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 100% · As of October 2026

Grünenfelder & Co. Briefmarken scores 77.1 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.72.024%
  • 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.80.810%
  • 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%
Grünenfelder & Co. Briefmarken scores 81.0 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.55.07%
Grünenfelder & Co. Briefmarken scores 86.7 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).86.722%
Grünenfelder & Co. Briefmarken scores 12.4 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 35.8.04%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.16.74%
Qualifications+0.00

Grünenfelder & Co. Briefmarken reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.5 out of 5 stars from 23 customer reviews. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
4.5
of 5

Aggregated from 23 reviews across all connected sources

Sources
GGoogle4.523
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

December 11, 2025Media
Lädeli in Rapperswil verkauft Briefmarken günstiger als die Post
nau.ch

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Location

Rathausstrasse 21
8640 Rapperswil Sg
Opening hours
Mon
Closed
Tue
09:00 - 11:45, 14:00 - 18:15
Wed
09:00 - 11:45, 14:00 - 18:15
Thu
09:00 - 11:45, 14:00 - 18:15
Fri
09:00 - 11:45, 14:00 - 18:15
Sat
Closed
Sun
Closed

At a glance

Legal form
General Partnership
UID
CHE-105.900.785
Founded
1988 · 38 years
Last commercial register change
May 16, 2023
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.79.06%
  • 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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