Rare baseball signed by The Beatles on their final tour of the U.S. is set to fetch $100,000 at auction

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An extremely rare baseball signed by all four Beatles on their last ever tour of the US has gone on sale with a staggering $100,000 price tag.

Paul McCartney, John Lennon, George Harrison and Ringo Starr each scribbled their signature on the ball after playing the DC Stadium in Washington DC on the fourth date of their 1966 tour on August 15.

The band's signatures were notoriously hard to come by but when Fred Baster, the equipment manager of the Washington Senators baseball team, asked them to sign three baseballs for him they obliged.

The baseball signed by all four Beatles is expected to fetch $100,000. Pictured is John Lennon's signature.

Mr Baster kept two for himself and gave another to Senators pitcher Mike Cronin.

This Joe Cronin Official American League baseball, housed in a velvet-lined wooden box, is one of the two that belonged to Fred Baster.

An engraved plaque on the box reads 'Beatles 66 £2'.

Paul McCartney's signed the ball at the end of the show, which was their last in the U.S.

The Beatles appear at a press conference at the Hotel Warwick in New York during their 1966 U.S. tour.

It is tipped to sell for $100,000 - around £65,000 - at Julien's Auctions in Los Angeles.

Darren Julien, from the auctioneers, said: "There are only three baseballs in the world signed by the Beatles, and this is one of them.

Ringo Starr and George Harrison both signed the ball, which goes to auction on November 7.

"The band had just played their fourth gig of their 1966 US tour when Fred Baster, the equipment manager for the Senators, approached them and asked them to sign three baseballs.

"Whether you're a baseball fan, a Beatles fan or both, this is an incredible item and we expect it to sell for a lot of money."

The auction will take place on November 7.

The Beatles perform at Shea stadium in New York during their final tour of the U.S.