The chair has hand-painted decorations by Rowling and features the phrases: "O you may not find me pretty, but don't judge on what you see," which of course die-hard fans will recognise as the Sorting Hat's opening lines in the first book. The chair also reads: "I wrote Harry Potter while sitting on this chair" and "Gryffindor" as well as Rowling's signature and lightning bolts.

Back in 2002, Rowling created a hand-painted chair for Christie's Chair-ish a Child charity auction for the NSPCC, where it sold for $21 000 to Miles Apthrop. In 2009, the chair sold on eBay for $29 000.

Although the buyer has so far remained anonymous, the vendor Gerald Gray, stated to the BBC: ''I plan to donate 10 percent to JK Rowling's charity, Lumos, because that's what she did in the first place."

Heritage pubic relations director Noah Fleisher commented how: "This is not just a chair. It's a work of art."

Rowling first sat down in the chair in 1995, where she sat at her typewriter to write both Harry Potter and the Philosopher's Stone and Harry Potter and the Chamber of Secrets.

James Gannon, Heritage's director of rare books stated: "Rowling transformed this ordinary piece of furniture into a work of literary art."

"It lives now as a powerful, tangible symbol of her determination and incredible imagination. She started in this chair as an impoverished woman and mother with a dream and rose from it as a giant of modern fiction."

Rowling commented that her ''nostalgic side is quite sad to see it go, but my back isn't.''

Check out Heritage on Barnebys here.