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"




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

Coin Grading

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



Market  Harmony

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





657 Evergreen Ave, Millvale, PA 15209, USA

Auction Representative

Coin Collecting


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

XRF Testing / Assay

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.

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.

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