Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Nigeria: 'Extension' Needed on West Africa Currency Launch Agence France-Presse West African powerhouse Nigeria on Monday called for a delay to the launch of a region-wide currency tentatively scheduled to come into effect this year. "Nigeria's position on the Eco currency is that the convergence criteria have not been met by majority of the countries," the country's presidency said on Twitter. "There therefore has to be an extension of time on the take-off of the single currency." West African regional bloc ECOWAS last year said it intended to introduce a common currency called the Eco in 2020. The announcement capped decades of discussions and postponements. .