View source for The Omega Speedmaster Professional and Buzz Aldrin

 [[File:Buzz-Aldrin-Speedmaster-1969.jpg|thumb|Buzz Aldrin wearing a Speedmaster during the Apollo 11 mission in 1969 - Courtesy of NASA]]
On the 20th of July, 1969 the first manned lunar landing was certainly one of the most dramatic scientific achievement in human history. Neil Armstrong was the first to step onto the moon’s surface. Since the electronic timing system on the Lunar Module was not functioning correctly, Armstrong had left his watch aboard as a reliable backup. Nineteen minutes later he was joined by Buzz Aldrin, who was wearing his Omega Speedmaster Professional. It was the first watch worn on the moon. It was a Omega Speedmaster Professional with a Calibre 321 movement. A few months after this mission, Buzz's watch was stolen and never returned.

Should it ever be discovered, and there is enough information from NASA to confirm originality, it would probably become the most valuable watch in this world or the next.