A rare UK £5 (S$8.90) note thought to be worth tens of thousands times more than its face value has been found in a Christmas card.
The note is one of only four engraved with an image of Jane Austen, with each featuring a quotation from one of her novels.
They are the work of Graham Short, a British artist specialising in miniature engravings, in a project launched by the Tony Huggins-Haig Gallery in Scotland. The notes are intended to celebrate the 200th anniversary of Austen's death later this year.
Tony Huggins-Haig, speaking to CNBC via telephone, described the notes as "almost a Willy Wonka golden ticket." He explained that the fivers - being of low monetary value - were "likely to end up in anybody's pocket" and were also important as a means of "bringing art to people."
The notes were released secretly around the UK in early December. Huggins-Haig said that they were spent in local businesses.
The latest note is the second to be found, inside a Christmas card at the end of last year. All that is known about the finder is that s/he is "somebody in education," according to Huggins-Haig.
The first note turned up in a cafe in south Wales. Both finders have requested to remain anonymous, but have said that they intend to keep - rather than sell - their lucky fivers.
Huggins-Haig said that Short's artwork usually retails for between £50,000 to £100,000 (S$89,000 to S$178,000) or more. He approximated that the notes were worth at least £20,000.
Anyone finding one of the engraved notes should contact the Tony Huggins-Haig Gallery.
Iconic nineteenth-century novelist Jane Austen is set to feature more prominently on the UK's currency, with her image being displayed on new £10 notes put into circulation in the summer of this year.