Long hidden photos of The Beatles are slated for auction, after decades spent in a family album. The 20 black-and-white images were snapped in London on the set of the Beatles first film, A Hard Day's Night, in March 1964. The photos will be sold by Omega Auctions in Stockport, northwestern England, on May 19 as part of a sale of vinyl, music and film memorabilia.

Though the Hard Day's Night set was closed and taking photos was prohibited, props manager Peter Allchorne proceeded to capture a series of images — something he customarily did on film sets, according to his daughter.

She told British press that her father, now 87, had not been particularly star-struck by the band since he was more of a jazz fan. Although he eventually got to know the Beatles during that time, he still treated A Hard Day's Night like he did any other film set, she said.

The entire lot is estimated to sell for $16,000.

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