The first recording contract The Beatles ever signed is going up for auction on Thursday in London and is expected to make £50,000.

The seven-page document, written completely in German, features the signatures of the band’s original line-up, namely John Lennon, Paul McCartney, George Harrison and drummer Pete Best, who was later replaced by Ringo Starr.

"It's a unique document,” says Beatles historian, Mark Lewisohn. “The recordings we've had for 50 years, but the contract that allowed those recordings to be made has never been seen, and it's the only Beatles recording contract that's ever come up for auction.”

Also going under the hammer is the 1926 piano on which McCartney wrote the song, ‘Yesterday.’

Watch The Beatles perform ‘Get Back’ live in 1969 below.