GUEST: They are a pair of silhouettes that I bought.

I call them my girls, or my sisters, and they hang in my bedroom.

I purchased them at an antique shop in Lancaster, Pennsylvania.

They're something that make me smile, and I love looking at them every day.

(chuckles) APPRAISER: What struck me right away was their-their incredible beauty.

They probably date to around 1825 and 1830.

GUEST: Okay.

APPRAISER: And the way that we date these is by fashion.

Their hairstyle, the style of their jewelry and the style of their dress-- that's one clue.

Another clue is looking at the medium, pastel on paper, and what's interesting to me is that they're large cutwork and then laid down on another piece of paper.

If you look at this picture, it's this sort of very plain background.

And then we looked at the other picture now, which has shifted slightly in its frame to reveal some blue behind it.

And what we discovered under the backboards of the picture was that it was a complete blue sheet of paper.

GUEST: Okay.

APPRAISER: Which, all of a sudden, then a light bulb went off for me, and I said, "Wow, blue background, cutwork, with these foil sort of embellishments on these beautiful girls"-- Ruth Henshaw Bascom, we believe, is the artist.

And she worked in this style.

She worked in New England, and these fall right within the height of the period in which she worked, in the 1820s, '30s and '40s.

GUEST: Okay.

APPRAISER: So how much did you pay for them?

GUEST: I paid $150.

APPRAISER: When I first looked at them and I thought they were American school.

GUEST: Mm-hmm.

APPRAISER: ...19th century, circa 1820 to 1830, and valued as such.

GUEST: Mm-hmm.

APPRAISER: If I were estimating them for auction today GUEST: Mm-hmm.

APPRAISER: I would say $10,000 to $15,000.

GUEST: (chuckling) All right... Really?

APPRAISER: However, with all the forensic clues that we've amassed GUEST: Right, right.

APPRAISER: if we were to price them as by this artist Ruth Henshaw Bascom GUEST: Okay.

APPRAISER: ...they would be worth double that.

For $20...GUEST: (gasps) (chuckles) I have goosebumps!

APPRAISER: $20,000 to $30,000.

GUEST: No way.

Oh, my God, ugh, I've got...

I have goosebumps, they're going up my legs.

Oh, my gosh.

(sighs) APPRAISER: They're beautiful.

They're amazing.

GUEST: I-I adore them.