Two Manx banknotes could fetch more than a hundred times their face value this weekend.
The £1 notes were printed for Martin's Bank in 1957 - the business was known as Mungo's Bank, after its general manager Mungo Conacher.
They'll be auctioned off by Murray's auctioneers at a sale on Allan Street in Douglas from 10am on Saturday.
The pair is estimated to fetch between £150 and £250.
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