A letter written by John Lennon to the Queen explaining why he returned his MBE has been valued at £60,000

The owner of the letter, who wishes to remain anonymous, brought the special piece of musical history along to a memorabilia day at The Beatles Story in Liverpool, where members of the public were being offered free valuations.

The letter was discovered tucked away inside the sleeve of a record that was part of a collection of 45s, which was picked up for £10 at a car boot sale 20 years ago.

The letter which was recently unearthed in the owner’s attic has been described as an “incredible find” by music memorabilia expert Darren Julien of LA-based Julien’s Auctions.

Until the meeting with Darren Julien last night, the owner of the letter had presumed it must have been a copy and was both stunned and delighted to discover that it could be worth such a huge sum of money.

Darren said: “Being the birthplace of The Beatles, I was quite confident that we would uncover something special during the memorabilia day at The Beatles Story.

“We have seen some fascinating pieces of memorabilia during the event. However, this is a real stand out piece. I believe this letter has the potential to sell for a lot of money at auction, around £60,000.

“We’ll be doing some further research but this could be the Beatles find of the year. There is no doubt that the handwriting is definitely that of John Lennon.”

Darren’s theory on how the letter ended up in the hands of a member of the public is that John Lennon never actually sent this version to The Queen when he famously returned his MBE.

He said: “You can quite clearly see that the signature in this letter has been smudged.

"My theory is that John Lennon never sent this draft because of the smeared ink. If you’re writing to the Queen, you want the letter to look pretty perfect, you don’t want the ink to be smudged.

"This suggests that he wrote a second version of the letter, which was the one that was actually sent to The Queen.”

Martin King of The Beatles Story added: “This is an absolute gem and we are thrilled to have seen a piece of memorabilia with such historical significance. Ironically,  October 26, was the day that The Beatles received their MBEs from the Queen so it’s quite fitting that the letter was brought into us on the exact same date many years later.”