Uruguay's 1976 military dictatorship — which had suspended constitutional rule three years earlier — oversaw a broad coinage reform program that included numerous pattern trials in alternative metals. Aluminium was tested for several denominations during this period as the government weighed production costs against durability, with most aluminium candidates ultimately rejected in favor of other alloys. This piece never advanced to circulation.
Uruguay's 1976 military dictatorship — which had suspended constitutional rule three years earlier — oversaw a broad coinage reform program that included numerous pattern trials in alternative metals. Aluminium was tested for several denominations during this period as the government weighed production costs against durability, with most aluminium candidates ultimately rejected in favor of other alloys. This piece never advanced to circulation.