Lincoln slavery ending document sold for $2.1 million

A rare copy of the Emancipation Proclamation signed by president Abraham Lincoln went on the auction block Tuesday.

The 1863 legal document that declared all slaves in Confederate states free was sold for $2.1 million at the Robert A. Siegel Auction Galleries.

Out of the 48 copies signed by Lincoln, only 26 are still intact, according to the auction house.