How much would you pay for another man's toothbrush, if that toothbrush happened to have gone to the moon? The auction house estimates someone might throw as much as $24,000 at this unique opportunity to own a piece of space history.

If you think that's too much to pay for something that has been in Buzz Aldrin's mouth, you're probably not going to be interested in paying even more for something that's been in his ear. The opening bid on Aldrin's earpiece that he wore on the lunar surface is $12,500 and the estimate ranges up to $35,000.