Extremely rare inner sleeve for the Beatles album Sgt. Pepper's Lonely Hearts Club Band, signed in blue ink by John Lennon, George Harrison, Paul McCartney, and Ringo Starr. The sleeve is affixed to a slightly larger cardboard backing. In very good to fine condition, with light overall creasing, and some scuffing to the edges. Consignor notes that this sleeve was signed by the Beatles on December 21, 1967, at their Christmas party for staff and friends following the completion of their BBC Television film, Magical Mystery Tour. Includes an outer Sgt. Pepper's album sleeve plus the 'Sgt. Pepper Cut-Outs' insert; the records are not included. Accompanied by a full letter of authenticity from REAL. A particularly rare fully signed format from a most-coveted Beatles album.