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The stelo ("star"; plural: steloj) was from 1945 to 1993 a monetary unit of Esperantists, one of whose aims was to achieve a single world currency. Attempts at an earlier currency, the speso, were cut short by the First World War. For a time the Universal League (Esperanto: Universala Ligo), part of the Esperanto movement, issued coupons and coins denominated in steloj, making attempts t