Rare color photographs of The Beatles taken during their first tour of the US are to be auctioned.
The unpublished pictures were taken in August 1964 by award-winning researcher and inventor Robert "Bob" Beck. The 65 slides comprise many stage shots, including one of George Harrison with his famous Rickenbacker guitar, which appeared in the movie A Hard Day's Night.
The pictures also feature close-up portraits from the Las Vegas convention Center gig as well as from a private party at the Beverly Hills mansion of the then president of Capital Records, Alan Livingston.
"New photographs that emerge of The Beatles are always of interest to the fans, but with the majority of photographs from this tour in black and white, it is a delight to see colour photographs from that historic tour," said Ernie Sutton from the British Beatles Fan Club.
The auction takes place 50 years to the day in 1963 when the band released their first album Please Please Me. The collection is expected to fetch between £10,000 and £15,000.