Sgt Trovatore
Seems my uncle Sam Trovatore was in London in 1967.
He used to be an extra in photo shoots.
When McFuckinCartney had to go out for a slash (= shove something white up his hooter), Sam stood in for the famous shot so the photographer could get the lighting right.
The only copy I have is kinda faded but:
He should have nicked the drum during the tea break.
It just sold for £541,250.
Some Scouser probably got in before him.