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A US fifty cent coin, or half dollar, is 30.6 millimeters in diameter. Weights of these coins vary depending on year of mint--previous to 1965 the weight is 12.5 grams. 1965 to 1970 the weight is 11.5 grams, and from 1971 forward they weigh 11.34 grams.

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∙ 13y ago

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