On 20 July, 1969, over 600 million people tuned in to watch what was perhaps the greatest event of the 20th century — human beings taking their first steps on the moon. The moment itself not only represented an immense technological achievement but also the unlimited potential of mankind to accomplish anything. Exactly 50 years later, Sotheby’s will offer the only surviving, first-generation recordings of the historic Apollo 11 moon walk. Viewed only three times since June 1976, the three reels of 2-inch Quadruplex videotape transport viewers to the big screen monitor at Mission Control, which displayed much clearer images with better contrast than those the more than half-billion-person television audience witnessed around the world. To learn more about Sotheby’s Space Exploration sale in New York click here.