A set of signatures from the Beatles and Ed Sullivan following the band's first US performance, in 1964, have sold for $125,000 at Heritage Auctions.
The lot headlined the Entertainment and Music Memorabilia Signature Auction in New York on April 26-27.
The band's scintillating performance on the Ed Sullivan Show is considered one of the most significant moments in the history of pop culture.
The lot is the only known example to feature signatures from the Beatles and Sullivan, making it an exceptionally desirable piece.
In addition, the lot features a signature from the band's manager, Brian Epstein, as well as their tour manager and press officer. Heritage commented prior to the sale: "The other signatories on this piece are the ones that were right there at their sides as it occurred, helping to make it happen.
"Without a doubt, the most important piece of Beatle memorabilia ever to be offered."
The fab four proved immensely popular at the sale, with a signed Sgt Pepper's Lonely Hearts Club Band fan club poster achieving $59,375.
In March last year, a signed Sgt Pepper album made $290,500 - a record for an autographed Beatles album. Both were bought at a Beatles convention in 1984 and consigned by the same person.
A guitar once owned by ZZ Top's Billy Gibbons also sold well, achieving $37,500.
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