this chair is one of two so decorated for the visit of The Queen and her husband when they visited the Mayor of Guildford on 27th June 1957. This is in the Mayor's Parlour where they had lunch. The visit was to mark the 700th anniversary of Guildford gaining its charter.
There is a You Tube video showing her visit. She later visited the almost finished cathedral and members of the England cricket team.
http://www.youtube.com/watch?v=sQhgQQjkUzU