Michael Arvay - owner and operator

  • University of Alabama: Culverhouse School of Business, UA Small Business Institute.
  • Began the company on 07/07/07
  • Lifetime member of ANA
  • Lifetime member of PAN

Providing the best mix of products and services to the community of rare coin and precious metal businesses and enthusiasts.

Market Harmony is recognized as a leader in rare coin offerings, innovative bullion products, and reliable precious metal services.


Other things which are precious to us:

  • Balanced decisions in all aspects of business.
  • Fair and honest product and service offerings.
  • A positive attitude in all situations.
  • Following the "golden rule"
  • Following the "golden mean"



  • Individual items to entire collections
  • Estates appraised and purchased
  • Certificates created for insurance purposes







We love to build or sell entire collections.  Give us your want lists and use us for getting those tough-to-find pieces.  You can also sell to us and reap the profits from your coin and jewelry investments.

XRF Testing / Assay

We are authorized dealers for PCGS, NGC, and CAC.  Have your coins protected and professionally graded with us as your agent.



657 Evergreen AveMillvalePA 15209, USA

Coin Collecting

Let us help to bring assurance to your valuables.  We can authenticate coins, gold and silver bullion, diamonds, and many other items.

Use our experience at buying and selling at auction, ensuring that you get the most.

Market  Harmony

Coin Grading

Auction Representative

With parts per million accuracy, we are able to perform a nondestructive analysis on the surface of any precious metal and tell you the percentage of each element.