Finally tonight, if you're in the market for some rare presidential memorabilia and you've got deep pockets, have we got an auction for you?

This is one of the rarest American flags in existence.

It's April 14, 1865.

And it's about to go on the auction block.

Certainly amongst the marquee items is this

really quite significant flag that draped the coffin of President Lincoln following his tragic

assassination as the coffin was loaded on to a train in Washington and then embarked on a historic run from Washington

to Philadelphia to New York City, on to other stops as it made its way to Springfield, Illinois,

where the president was buried.

April 14, 1865, the Civil War had ended just days before. A war-weary Abraham Lincoln went to Ford's

theater in Washington to see a popular comedy of the day, our American cousin. As the audience

reacted to one of the play's biggest laugh lines, actor John Wilkes Booth entered the presidential

box and shot Lincoln in the head.

Items related to Lincoln's assassination are so rare they tend to sell for high prices.

A wanted poster for booth sold for more than $160,000.

A pair of tickets for that performance, over $260,000.

Even scraps of bloody fabric from the dress worn by an actress in the cast that night have commanded top dollar.

When you have something that's completely unique in all the world, how do you guess what it may be worth?

Top estimated price?

$1.2 million.

The Gurnsies auction in New York later this month includes other presidential artifacts, some never before seen in public. There's a lock of George Washington's hair.

It was first given to a family friend of the Washington's, and then their descendants kept a record of it very

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