An Abraham Lincoln supporters' banner from the 1864 US election is to cross the block at Heritage Auctions.
It's expected to make in excess of $85,000 in the May 18 sale in Dallas.
Heritage comments: "No category of political campaign memorabilia is more highly prized than the 1860 and 1864 flags supporting Lincoln's candidacy.
"Such a unique artifact is very difficult to value. Other varieties of Lincoln portrait flags have been traded, publicly and privately, mostly for prices ranging from $50,000 to nearly $200,000 over the past decade."
The present lot is one of the very rarest examples, which show a portrait of Lincoln. The record for a Lincoln campaign flag stands at $83,650, set at Heritage Auctions in 2007.
A lock of Lincoln's hair is also on offer, with an opening bid of $16,000.
It was taken from his head shortly after his assassination.
Earlier this year a lock of Lincoln's hair made $25,000 at Heritage Auctions.
The sale will also feature a boat raced by John F Kennedy and his brother during the 1930s.
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