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Five grams. The nickel was the first U.S. coin to have its weight expressed in round metric units, back in 1866.

Yes, efforts to break this country free of the ridiculous pound-foot-fortnight-bushel system of measurement have been going on for nearly 150 years. One of these days we'll wake up and join the rest of the world...

Nickel (value: 0.05 U.S. dollar), mass: 5.000 grams, diameter: 21.21 mm (0.835 in)

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9y ago

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