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Javier Mercado

About Coleccionistas de Monedas covers a wide range of topics related to antique coins, including coin sales, value, grading, trends, auctions, critics and opinion. Whether you are a collector or want to sell your coins at a fair and reasonable price, we want to be your go-to source for what you need to know.

Our team of editors has a lot of experience in the numismatic industry. In fact, all the reviews on our site are written based on their first-person experience and testing. has numismatic professionals, appraisers and people of proven reputation who help verify the accuracy of our content, specifically on topics related to investing in high-value coins.

We also work daily to keep our content as up-to-date as possible and indicate the date of the latest editorial modification at the top of our articles. is a member of the A.N.A (American Numismatic Association), the most important numismatic association in the United States.


Numismatic Expert & Writer. BA in History and BS in Computer Science. He's a member of the American Numismatic Association (ANA) and the Numismatic Literary Guild (NLG) and write in several digital media specialized in collecting, auctions and antiques reviews.


He is an active investor and a member of the coin collecting community, specializing in antique United States coins. He uses this expertise to disseminate knowledge and interest in coins among the broad audience of Coin Collectors through both simple and high-level articles.

Features in Other Publications

Important publications and media outlets, such as El Español, El Economista, Diario de Navarra, or Ideal de Granada, acknowledge Javier Mercado's expertise in the field of ancient coins. Below, you can find some of the most recent interviews and contributions:
El Español
El Economista
Diario de Navarra


Javier has been an active member of the coin collecting community for approximately 15 years. He has gained extensive experience during this time and wishes to share it with his readers.


He completed a Bachelor's degree in History from UNED and a degree in Computer Science from the University of Cádiz.