Conversation so far:
What was Oliver Tambo's biggest honour?
Oliver Tambo was a South African anti-apartheid politician and revolutionary who served as President of the African National Congress from 1967 to 1991.
When was the Johannesburg International Airport airport officially renamed after Oliver Tambo?
The proposal was accepted and the renaming ceremony occurred on 27 October 2006.
Did Oliver Tambo have any other notable honours besides the renaming of an airport?
There is a bust of O.R. Tambo at the Albert Road Recreation Ground, Muswell Hill, outside the Alexandra Park School.

Question: When did the bust take place?
Self-contained rewrite: When did the bust of O.R. Tambo at the Albert Road Recreation Ground take place?