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Updated: May 26th 2:49PM ET
(800) Coins-99:  7AM - 11PM ET EVERY DAY

About Us

Our Business

Coin Rarities Online (CRO) is a boutique rare coin business owned by John and MaryAnn Agre.

We offer choice, hand-selected, high quality coins in a wide range of grades and price points in four major categories:

  • Colonial & Early American Coins
  • United States Coins
  • World Coins Used in Early America
  • Esoteric Numismatic Items

You can find us online, at coins shows around the country, and at numismatic auctions, large and small.

We also work closely with clients and provide a wide range of numismatic services, including consulting, appraisals, help with grading and CAC submissions and assistance buying and selling at auction.

And when you contact us, you will speak directly to an owner who is 100% committed to your satisfaction.

Our Philosophy

We believe in absolute honesty and integrity in all of our dealings.

We believe it is our responsibility to add value for our clients, and we hope that if we do that we can earn a fair return for ourselves.

We believe in research and scholarship, and we are convinced that there is simply no substitute for doing one’s homework.

We believe in the preservation of numismatic history and abhor the recent trends of conserving perfectly fine original coins in order to secure higher grades.

We believe in modesty and discretion over hype and marketing flash.

We believe there are many ways to enjoy this great hobby and respect every individual collector’s own definition of what is right for them.

And, finally, we believe that coin collecting should be fun.

Our Staff

John Agre

John has been collecting and studying coins since the late 1960’s, when he began attending local shows with his father and building a US type set. A collection that would soon expand to Buffalo Nickels, US Commemoratives, Large Cents and Colonial and Early American Coins.

By the age of 11, John was buying and selling coins for profit, gaining a lot of experience in all series over the next half dozen years or so.

While attending Northwestern University and then graduate school at Cornell University, getting married, doing stints living in Japan and Singapore and traveling the globe, John spent much of his spare time extensively researching Colonial and Early American coins in an effort to create a comprehensive photographic condition census of all issues.

A project that took (and is still taking) thousands of hours and, more often than not, has revealed inaccuracies in accepted population estimates and census rankings and ultimately led to John becoming a part-time dealer specializing in Colonial and Early American coins in 2001.

By 2005, the part time business had grown sufficiently to convince John to became a full-time dealer and eventually a partner in CRO with Dave Wnuck.

For the next 7 years the two bought and sold colonial, federal, world and esoteric issues of all types, helped assemble many prominent collections, placed a wide variety of great rarities and famous coins and did some significant deals, but also were equally proud to offer choice examples of relatively affordable coins to thousands of collector customers.

In July of 2012, John and MaryAnn purchased Dave’s share of the business, with an eye toward continuing the proud CRO tradition.

MaryAnn Agre

MaryAnn is the cerebral half of CRO, a voracious reader and financial whiz who obtained her joint degree in English and Economics at Vanderbilt University.

After spending her senior year abroad at the University of Leeds and traveling extensively in Europe, MaryAnn worked for the Bank of New York, then Banker’s Trust before earning her MBA from Cornell, working for a start-up in Budapest and spending time in Japan.

MaryAnn’s next job was as the Vice President of Operations for Morgan Stanley Asia in Singapore, a role that had her overseeing US$2 billion in trades, working 15 hour days, answering calls at 3 AM, eating the occasional scorpion on shrimp toast and taking those loooong trips from Singapore to London to New York.

All experiences that make her well qualified to be a partner in an internet coin business like CRO.

Our Affiliations

Coin Rarities Online staff are long time members of many respected numismatic clubs and organizations:

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