In Sardinia, 19ᵗʰ century, the cagliarese was, in the first place, a small copper coin, = 2 denari = 1/6th of a soldo. It was used in purchasing wine and oil, but as a unit of capacity it did not represent a defined volume, since how much wine or oil the buyer received as “1 cagliarese” depended on the going price of wine or oil. To quote Smith:
Wine Measure. The Cagliarese is a small retail measure, varying inversely with the price.
Oil Measure. There are two small retail measures, of 1 Cagliarese, and of 3, varying inversely with the price.
William Henry Smith.
Sketch of the Present State of the Island of Sardinia.
London: John Murray, 1828.
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Last revised: 3 December 2013.