The most valuable £5 notes - serial numbers and the 'AA' codes to watch for - Mirror Online

The new notes are now in circulation - but some serial numbers are attracting sky-high prices. Here's how to spot a special fiver

There's another rare £5 note type selling for thousands of pounds - Mirror Online

Most rare and valuable £5 notes in circulation revealed - from quirky serial numbers to vintage copies worth hundreds

The 'secret' meaning of the serial number on every Australian banknote

There's a different type of rare £5 note that's selling for thousands - Manchester Evening News

Numismatic Collectors Series Sale by Spink and Son - Issuu

Some new £20 notes could be worth thousands - here's how to tell if yours is rare - Bristol Live

This plastic £5 note just sold for £60,000 on - and this is why - CoventryLive

The most valuable £5 notes - serial numbers and the 'AA' codes to watch for - Mirror Online

Mismatched Serial Numbers, Stuck Digits and Fancy Serial Number Banknotes