Rare copy of US constitution up for auction expected to sell for millions

Document printed in 1787 to be sold in North Carolina, where minimum bid of $1m has already been made

A rare copy of the US constitution printed 237 years ago and sent to the states to be ratified is being auctioned on Thursday evening in North Carolina.

Brunk Auctions is selling the copy, the only of its type thought to be in private hands. The minimum bid of $1m has already been made. There is no minimum price that must be reached.