1987 - the date is wrong here - the letters would spell out Diego Maradona scores with the Hand of God - but this happened in the Mexico world cup of 1986 not '87.
1904 previous suggestion was The Boleyn Gardens Open
The date does appear a lot in relation to the gardens being 'laid out' between 1904 - 08 but I can't find anything specific about them opening in 1904. Perhaps the O stands for something else Who knows
This is a stinker of a quiz !! xx