In September 2016, the polymer £5 entered circuation. Not only did it redesign our wallets and purses but notes with special serial numbers were very valuable.
After the fiver was launched collectors went into a frenzy for ones with valuable serial numbers - an AK37 007 £5 note sold for 1,000 times its face value at £5,000.
The polymer £10 will enter circulation on Thursday September 14, and according to money expert site ChangeChecker , notes with unique or special serial numbers will be worth a lot of money.
But how do you know which numbers will be valuable?
Which codes will be valuable?
According to ChangeChecker, notes with key Jane Austen dates are worth looking out for.
- Serial numbers 16 121775 and 18 071817 - which represent the author’s date of birth and death, respectively.
- Serial number 17 751817 - her birth and death year combined.
- And true Jane Austen fanatics would know that serial number 28 011813 is the date that Jane Austen’s most celebrated novel, Pride and Prejudice, was first published.
JA01, JA75 (referring to Austen’s birth year of 1775) and JA17 notes are likely to become popular with collectors in the future.
ChangeChecker said: "It could be many years before notes with these serial numbers enter circulation due to the huge amount of possible combinations that would come before JA.
"Consecutively numbered notes are always interesting to collectors too, one man sold three consecutive AA01 notes for £456."
What other codes should I look for?
AA01 notes are the first to be printed and will be popular with collectors.
ChangeChecker said: "The rest of the AA prefix notes will be interesting to collectors but not necessarily worth a huge amount, although that said, some £5 notes did sell for around £20 last year – four times their face value.
"There may well be a rush to find the AK47 serial numbers again and James Bond 007 will likely be popular."
Could I get the first ever printed note?
The Queen will receive the first printed polymer £10. The second note will be given to Prince Philip and the third to Theresa May. The Chancellor, Philip Hammond will be given the fourth note.