London, March 27 (ANI): The flight plans for Neil Armstrong's historic 1969 expedition are expected to fetch 55,000 pounds when they go under the hammer in April.
Auctioneers Bonhams will invite bidding for the plans for the Apollo 11 epic journey on April 13.
The documents were said to have been previewed before being put up for sale and also have another story to offer, The Daily Express reported.
They confirmed that the astronaut messed up his lines while taking the first steps on the moon.
Armstrong was expected to say "One small step for a man, one giant leap for mankind" - but he famously missed the "a" to say "One small step for man".
The correct phrase was written on the flight plans and signed by the Armstrong himself, believed to be the only time he ever wrote down the famous words. (ANI)