Finding out that the fiver in your wallet is £noteworth£worth thousands of pounds is a dream-come-true for some -- but not everyone.

A Northern Irish woman who discovered a rare £5 note worth £50,000 ($62,317) has given the note to charity because she says she has no use for the money.

The note is one of just four ultra-rare notes worth £50,000 in circulation in the UK. The note -- which is engraved with a special Jane Austen inscription -- is the third one to be snapped up, leaving just one left.

The woman who discovered the note contacted the gallery founded by Graham Short -- the artist who engraved the notes -- stating her wish to donate the note to charity.

"£5 note enclosed, I don't need it at my time of life. Please use it to help young people," reads the letter sent to the gallery by the donor, who prefers to remain anonymous.

"The lady who found the note has surprised us all by sending it to the gallery and asking that it be used to help young people," reads a blog post on Short's website.According to the post, the proceeds from the note will be donated to children's charity Children in Need."Currently contacting outlets connected to Children in Need to try and give this to a good cause so we honour the request of the lucky woman who originally discovered the note," the post continues.