The auction house says the watch is "one of the finest and rarest objects from the Titanic story in existence".
A gold pocket watch recovered from the body of one of the richest passengers on the Titanic is being sold 113 years later for $1.2million.
A gold pocket watch recovered from an elderly couple who drowned during the sinking of the Titanic is expected to fetch at least £800,000 when it is sold at auction.