SOURCE: BBC (11-9-09)
The image shows Mr Sarkozy, then a 34-year-old French MP, standing before a graffiti-covered section of the wall.
His caption dates the image to 9 November 1989, but French observers say it was probably taken the next day.
In the caption, the French president says he arrived in West Berlin with a group of French politicians on the morning of 9 November, crossed Checkpoint Charlie to the East, and headed for the Brandenburg gates.
However, French commentators point to a possible mix-up of the dates.
They say news of the collapse did not come until late in the day on 9 November, and West Berliners did not begin attacking the Wall until the following day.