5th June 1952: Queen Elizabeth II, mounted on a horse at the gate of Buckingham Palace, London, taking the salute at the annual Trooping of the Colour ceremony. (Photo by PNA Rota/Getty Images)
5th June 1952: Queen Elizabeth II, mounted on a horse at the gate of Buckingham Palace, London, taking the salute at the annual Trooping of the Colour ceremony. (Photo by PNA Rota/Getty Images)