This was given to me as a birthday present a while ago. The "deed" to a plot of land on the moon is primarily issued and sold by Lunar Embassy, an American extraterrestrial real estate service. It does not guarantee legal ownership. This exploits a loophole in the Outer Space Treaty, which prohibits national claims to the moon but does not prohibit individual ownership. Although its legal significance is limited, it can be transferred and inherited, and is circulated as a symbolic ownership or souvenir.