NASA

Sotheby's Set to Auction Space Exploration Artifacts on July 20

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Screenshot from Sothebys.com
The most expensive object is lot number 102 from Apollo 11, a flown contingency lunar sample return decontamination bag. This was the bag used by Neil Armstrong to bring back the very first samples of the moon ever collected. Estimated value: between $2 and $4 million dollars.
Sotheby's is holding its first space exploration-themed auction since the early 1990s, when it auctioned off Russian space history artifacts. The July 20 auction coincides with the 48th anniversary of the Apollo 11 lunar landing and offers objects from both the American and Soviet space programs. To view the full catalogue, visit sothebys.com.