The search is on for the fourth, and final, engraved £5 note in circulation.
When the plastic notes were launched last year, artist Graham Short carved portraits of author Jane Austen onto four unique fivers each worth £50,000.
He then spent the notes in all four UK countries, with three of them now found.
The final one was spent in Melton Mowbray, Leicestershire, and could now be anywhere.
The third was discovered in a bar in Northern Ireland last week, with the finder auctioning it off for Children in Need.
It comes after discoveries in Wales and Scotland in December.
The microscopic portrait is engraved onto the transparent part of the notes in a tribute to the author, with each carrying a unique quote from her work.
2017 marks the 200th anniversary since her death.
The serial numbers of the notes were released to help hopefuls identify them. They are: AM32 88551, AM32 88552, AM32 885553 and AM32 88554.
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