Coronation Procession Rehearsal a guards officer checks the time as the state landau leaves Piccadilly Circus and is about to turn into Haymarket. Guards officers and officials connected with the coronation procession arrangements timed a state landau drawn by eight Windsor Greys, a band, and detachments of guardsmen - over the second half of the coronation procession route this morning November 23 from 7:30am. Hoar frost lay on the roads, which had been specially cleared of traffic. November 23, 1952. (Photo by Associated Press Photo).