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Finding Varieties & Errors

How Coins are Made (with Errors & Varieties)

MintState Review / Recap
This video explains the basic setup for minting modern coins and how coin errors and varieties can occur. There are many diagrams were the process from punching coin plackets, annealing and quenching, upsetting mill and finally, the coining chamber where the coin is struck by the dies. The difference between (and how) mint errors and varieties can occur is explained. How the master dies, working hubs and working dies are used and how varieties develop from the process and their use is covered. The video references a source website for more detail on these topics plus types of double dies, types of varieties and mint marks.
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  •  May 1, 2020
  •  YouTube / CoinHelpU

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