Unit Definition (firkin [butter, soap]) The firkin [butter, soap] is a traditional unit of weight for butter and soap, equal to 4 stone or 56 pounds (about 25.40 kilograms).
Unit Definition (denaro [Italy]) The denaro is a traditional Italian weight unit equal to 24 grani; its size varied from about 1.1 grams to 1.25 grams.
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