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If you've hung onto £1 for almost a century, your investment could see a return of almost 12,000 per cent this weekend!
Manx £1 notes dating back almost 90 years will go under the hammer when Chrystals auctioneers host a sale in Allen Street in Douglas on Saturday morning.
Among the lots are two bank notes issued by Isle of Man Bank in June 1936.
They're expected to fetch up to £120 each.