Scotland prepares for independence vote

First Minister Alex Salmond's chief economic adviser has insisted Scotland has viable options for its currency if there is a yes vote in the independence referendum on September 18, 2014.
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In this photo illustration, pound coins are placed on a Union Jack flag on August 20, 2014 in Glasgow, Scotland. First Minister Alex Salmond's, chief economic adviser has insisted Scotland has viable options for its currency if there is a yes vote in the independence referendum on September the18th. (Getty Images)
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In this photo illustration, referendum polling cards and information are placed on a table on August 20, 2014 in Glasgow, Scotland. First Minister Alex Salmond's, chief economic adviser has insisted Scotland has viable options for its currency if there is a yes vote in the independence referendum on September the18th. (Getty Images)
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In this photo illustration, referendum polling cards and information are placed on a table on August 20, 2014 in Glasgow, Scotland. First Minister Alex Salmond's, chief economic adviser has insisted Scotland has viable options for its currency if there is a yes vote in the independence referendum on September the18th. (Getty Images)
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Posters reading 'No Thanks' are displayed outside a block of flats in Glasgow on August 19, 2014 ahead of the upcoming referendum on independence which will be held on September 18, 2014. A month to the day until Scotland votes on whether to split from Britain, opinion polls on August 18 showed the pro-independence camp gaining ground as First Minister Alex Salmond insisted his side had a 'spring in their step'. (AFP/Getty Images)
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A Scottish Saltire flag with 'Yes' written on it is displayed outside a block of flats in Glasgow on August 19, 2014 ahead of the upcoming referendum on independence which will be held on September 18, 2014. A month to the day until Scotland votes on whether to split from Britain, opinion polls on August 18 showed the pro-independence camp gaining ground as First Minister Alex Salmond insisted his side had a 'spring in their step'. (AFP/Getty Images)
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Residents of Glasgow display their support for the upcoming referendum on independence on August 19, 2014 in Glasgow, Scotland. A month to the day until Scotland votes on whether to split from Britain, opinion polls Monday, August 18, 2014 showed the pro-independence camp gaining ground as First Minister Alex Salmond insisted his side had a 'spring in their step'. But the polls still showed a strong lead for the 'No' camp ahead of the vote on September 18, suggesting voters are on course to reject independence. (AFP/Getty Images)
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Residents of Glasgow display their support for the upcoming referendum on independence on August 19, 2014 in Glasgow, Scotland. A month to the day until Scotland votes on whether to split from Britain, opinion polls Monday, August 18, 2014 showed the pro-independence camp gaining ground as First Minister Alex Salmond insisted his side had a 'spring in their step'. But the polls still showed a strong lead for the 'No' camp ahead of the vote on September 18, suggesting voters are on course to reject independence. (AFP/Getty Images)