What can about $30 million buy you these days? How about your very own copy of the basis for Western civil rights - the Magna Carta.

Auction house, Sotheby's, will put a genuine copy of one of the earliest versions of the Magna Carta up for bidding in December, after the historical document leaves the National Archives in Washington.

According to Sotheby's, there has never been an auction of the Magna Carta before, and they believe the piece of British history will fetch between $20 and $30 million.

Sotheby's Vice Chairman David Redden called the Magna Carta, "the most important document on earth," and says the item up for bid is one of two known copies that exist outside of England.

The Magna Carta, was first written in 1215 and signed by King Edward I in 1297. This copy comes from an official set made by Edward in 1297, and bears his seal. It was held by the Brundell family in England for centuries until Ross Perot, the one-time Independent candidate for president, bought it in 1984.

Perot lent the authentic copy to the National Archives in the capital, where it will rest until the auction. According to CNN, the Perot Foundation plans to distribute the money from the auction to various charities aimed at funding medical research and helping wounded soldiers.