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In the first article in the series examining mathematics on coins, we discusstwo great scientists who are not only featured on many coins, but alsocontributed to both theory and practice of coinage. The first one is NicolausCopernicus, author of the treaty \emph{Monetae cudendae ratio} in which heproposed the law governing competition between money and proposed reform ofcoinage in the Royal Prussia. The second one is Sir Isaac Newton, warden andMaster of the Royal Mint, and overseer of the Great Recoinage of 1696.

Mathematics on coins, part I: The Tale of Two Queens and Two Towering Figures