John Lennon: a hat worn for the last official Beatles photo shoot,
The statement confirms this was borrowed by John from Mal Evans. It was worn on various occasions, including the photo-shoot and sequences for the later 'Imagine' film. It was Mal's widow, Lily, who added the purple band which is seen in numerous photographs from the period. This is now missing but the outer band still bears the pinholes where it was attached.
The last official photo shoot for the Beatles took place at Tittenhurst Park on Friday 22nd August 1969, two days after their final recording session. Photographers present were Ethan Russell, Monty Fresco (from the Daily Mail) and Mal Evans. Several of Ethan Russell's pictures were later used for the cover of the compilation album 'Hey Jude', issued in early 1970.
The shoot is described in detail in 'The Beatles London', Piet Schreuders, Mark Lewisohn, Adam Smith, Publ. Hamlyn, 1994, pps.100-102.