APPRAISER: Some posters combine great visual, graphic boldness with exceptional history.

And the piece I think that resonates the most for me is a poster that we saw in Hartford, Connecticut in 2008.

GUEST: I found this, and I had never seen a women's suffrage poster before, so I was very interested.

I bought it, and then I tried to research it, and I haven't been able to find any posters on women's suffrage.

APPRAISER: How much did you pay for it?

GUEST: I think it was either $50 or $75.

APPRAISER (voiceover): The early women's suffrage movement in America in the years leading up to the First World War, was such an important period in this country's history.

And this poster just bespeaks volumes of information about that time.

The poster is not in great condition.

There's a lot of little areas where water has gotten in and it's begun to become eroded.

And it's begun, basically, to-to freckle or to become foxed.

There are some repaired tears also.

I'm not gonna be too critical about the condition.

The theory is when you find the holy grail, and there's a chip in it, you've got to take it for what it is.

You don't see too many suffragette posters because the movement didn't have that many posters.

GUEST: Right.

APPRAISER: It's a poster that is so rare that when I saw it in Hartford, I had only ever seen it before in books.

Because of the rarity of this poster, I would estimate it at auction at $10,000 to $15,000.

GUEST: Wow.

APPRAISER: And really think that's just the beginning.

I don't know where it could finally end up.

GUEST: Well, that's fabulous.

APPRAISER: Since it came up on the show in 2008, I have only seen it in person one other time.

When we had it at auction in 2009, in substantially worse condition, it sold for just under $6,000, which is the only time it has ever come up for sale.

I have no idea what's happened to that poster since Hartford, but I will tell you, if you have an original version of this poster, keep it, because the price is going up and going up and going up.

I don't see the high end for this.

$12,000 to $18,000, as an auctioneer, I would say would be a-a good conservative starting point, but I-I don't know where it would end now.