In 2007, the Bank of England released a very special Replacement £20 Twenty Pound Banknote signed by Andrew Bailey Certified and Graded Choice Uncirculated 64 OPQ

Prefix - LL15 936229

• Bank of England
• Adam Smith £20 Twenty Pound Replacement Banknote
• Signed by A Bailey
• Certified Slabbed and Graded by PCGS as Choice Uncirculated 64 OPQ

What is a replacement banknote :

A replacement banknote commonly referred to as a star note, is a banknote that is printed to replace a faulty one and is used as a control mechanism for governments or monetary authorities to know the exact number of banknotes being printed.
Also, since no two serial numbers can be the same, the banknote is simply reprinted with a symbol in the serial number, identifying it as a replacement for an error note. Replacement bills have different symbols to mark the error around the world.