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A little wonder, every day

Newton fought coin clipping but did not invent reeded edges

AI-generated symbolic macro still life of a milled silver coin edge and a hand tool, illustrating protection from clipping. Not an authenticated Newton-era artifact. Generated with OpenAI image generation; no external source or reuse license applies.

AI-generated symbolic macro still life of a milled silver coin edge and a hand tool, illustrating protection from clipping. Not an authenticated Newton-era artifact. Generated with OpenAI image generation; no external source or reuse license applies.

Listen to fact0:00 / —

In the late seventeenth century, Isaac Newton worked at the Royal Mint and helped combat coin clipping and counterfeiting. But reeded edges were not his invention: machine-milled edges appeared earlier, in the mid-seventeenth century. They were easier to inspect because removing metal damaged the pattern.