Buckingham Palace note-card scribbled on with pencil drawings by a young Queen Elizabeth II and Princess Margaret, £9000 at Cheffins.

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The pair did the drawings probably c.1938-39 while visiting their dentist Mr Aldred. The card was left in the waiting room and has since been copied for the Royal Archives.

It was estimated at £1000-1500 at Cheffins (29.4% buyer’s premium inc VAT) Library Sale of April 27 but did rather better – selling for a whopping £9000.