The developing imagination of Sir Paul McCartney has been revealed by the chance find of a schoolboy phalic symbol found etched in a wooden desk found in storage at the young Beatles former grammar school.
Former teacher Derek Digby said "it's clearly Paul's hand, look at the subtle etching work along the shaft and the three droplets emerging from the rotund bell end. What talent! It's only a small jump to scratching this into a desk with a protractor to composing the bass riff to 'Day Traveller'"
Art critic Brian Naseby said "Paul was clearly showing his mischevious side. We can see the same sense of fun at work in some of his more memorable hits such as 'Sgt Pepper's Smelly Farts Club Band' and 'Dirty-Mag Seller'"
The desk will be auctioned later this month. All proceeds will go to charity.