A letter penned by late Beatle John Lennon is to be sold at auction next month, expected to fetch more than $42000.

As NME reports citing BBC News, the letter, thought to be the earliest of its kind, was written by Lennon at the age of 11 in 1951. It is a thank-you letter to his aunt, which thanks her for his Christmas presents that included a towel with his name on and a book about ships.

The letter will be sold by online auction house TracksAuctions.com, closing on April 3. It is part of an auction collection that includes around 300 items.