John Lennon's signature on a receipt for the delivery of some furniture to Mimi's house at Sandbanks in what looks like March 1967.
It would certainly tie in with John's visit to see Mimi when the two of them were photographed with Julian at Sandbanks ferry, as seen in this Dorset magazine cover.
John is wearing the Afghan he wore at the press launch of Sgt Pepper at Brian Epstein's house on May 19, but everyone in the photo appears to be dressed for March rather than May.
It seems the boys had a few days off following the session at Abbey Road on 23 March to record more vocals for Getting Better and a session on 28 March at which John had his first crack at the lead vocal for Good Morning Good Morning.
Mimi obviously had an account at Beales and Bealesons - the receipt indicates it has been made up to 24 February 1967, still further evidence that the almost entirely illegible delivery stamps indicate March rather than May.
And, of course, it's impossible to resist the obvious similarities between the Beales name and that of the group in which her nephew had earned the money to buy her home. (Bealesons was previously a draper's store in Commercial Road, Bournemouth that Beales' founder, John Elmes Beale bought from a Mr Okey after World War One. It's now The Avenue shopping centre.)
We can only wonder at the reaction of the delivery driver when he called to deliver an old lady's chairs, blankets and came face to face with a Beatle.
:: The complete version of the photo of John and Mimi with Julian at Sandbanks ferry can be found in Yeah Yeah Yeah: The Beatles & Bournemouth, available to order at a special price here.
:: A permanent exhibition of memorabilia relating to The Beatles and their connection to Bournemouth can be seen at the Beacon Hotel.