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How to Determine the Value of a Rare Coin


Multi-Media Summary

Whether buying, selling, or researching, determining a coin's value is a critical part of numismatics, and probably the most difficult part. The simplest way to determine the value of a coin is to research historical auction data to see what a similar coin sold for at a recent auction. However, the price of coins go up and down frequently, and determining the true market value of a coin can be a lot more complicated. In this presentation, Grant Powell (founder of will teach you everything you need to know to determine the actual value of your numismatic items. Learn what patterns determine a coin's value, and how AI and Big Data are changing the way we determine coin values. This presentation was part of the 2020 Newman Numismatic Portal Symposium, held virtually, August 28-30, 2020.
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