Calling All Collectors! Gain More Knowledge About Your Treasures Here

Coin Dealers Rockville - Error Coins

Coins have been a prized possession for centuries. Check out these resources, links, and interesting articles to find out more about collecting and protecting coins and other valuables:

  • Bronze disease is common in copper-alloy-based coins. Learn how to prevent the corrosive consequences of this condition by reading this article from
  • In the long legacy of coin collecting, error coins gained popularity relatively recently. Check out this article from NBC about one worker who took error coins for his own collection.
  • If you’re interested in investing in coins, do your homework. Consider this information from
  • Silver-centered coins are highly sought after by modern collectors. Learn more about these coins by checking out this article.

Coins of the Realm is an authorized dealer of coins, gold, and other valuables, with a solid reputation for accuracy since 1974. Call us today at (301) 340-1640 for more information about our products and services.


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Why Choose Coins of the Realm, Inc.?

  • Free storefront parking providing easy access.
  • Established in 1974 and still under original ownership and management providing decades of expertise in all aspects of buying and selling.
  • Financial Security – Since opening in April of 1974 every transaction of every size has been completed successfully without issue. Bank references available.
  • We provide accurate information in a professional no pressure environment allowing you to make sound decisions to sell, keep or buy collectibles and precious metals.