Memberships and Affiliation

Grunberg Schloss Collectors' Cabinet
  • Do you offer appraisals?

    We provide complimentary verbal appraisals at no charge. Written appraisals, including those for estate or insurance purposes, are available for a fee.
  • Do you ship items?

    Shipping is available for purchased items. Specific costs and delivery timeframes will be determined when the transaction is finalized.
  • What items can be appraised?

    Our appraisal services cover rare coins, U.S. and foreign coins, paper currency, gold and silver bullion, coin collections, estate collections, ancient and medieval coins, precious metals, and select collectibles.
  • How do I prepare for an appraisal?

    Bring your collection as is. Documentation such as receipts, grading certificates, prior appraisals, or collection inventories can assist in the evaluation process but are not mandatory.
  • How is the value of a coin or collection determined?

    We assess value using multiple criteria, including rarity, condition, precious metal content, historical significance, market demand, and prevailing gold and silver prices.
  • Do you sell metal detectors?

    We do not currently carry metal detectors. Please contact us for additional information.
  • Do you provide estate appraisals?

    Estate appraisal services are available for inherited coin collections, precious metals, paper currency, bullion, and other collectible assets. A fee applies for these services.
  • Do you provide insurance appraisals?

    We prepare written appraisals for insurance documentation purposes, covering coins, bullion, precious metals, and collections. These services are provided for a fee.
  • What is bullion?

    Bullion consists of precious metals like gold and silver whose value is determined primarily by metal content. We carry various gold and silver bullion products suitable for both collectors and investors.
  • Can you appraise my coin collection?

    We provide evaluations for individual coins, complete collections, inherited coins, and precious metals to establish market value and collector interest.

Connected to the Collecting Community

At Grunberg Schloss Collectors' Cabinet, we believe that being part of the collecting community means staying connected to fellow collectors, industry organizations, and businesses that share our commitment to knowledge and integrity. Our memberships and affiliations reflect our ongoing involvement in the numismatic, treasure-hunting, and business communities we serve throughout the Inland Northwest.


We are proud to be affiliated with organizations that support collectors, promote education, encourage responsible business practices, and strengthen the communities we are part of. Our memberships include the Northwest Treasure Hunters Club, Pacific Northwest Numismatic Association, American Numismatic Association, National Federation of Independent Business (NFIB), and Better Business Bureau (BBB).


Our Memberships and Affiliations:


  • Northwest Treasure Hunters Club
  • Pacific Northwest Numismatic Association
  • American Numismatic Association
  • National Federation of Independent Business (NFIB)
  • Better Business Bureau (BBB)

Connect With Grunberg Schloss Collectors' Cabinet

Whether you're a longtime collector, new to numismatics, or simply curious about coins, currency, and other collectibles, we're here to help. Contact us today to learn more about our services and how we can assist you.