GUEST: It's a piece that's always been a part of my family.

I remember her in the living room when I was a little girl.

I'm just guessing that my grandfather purchased it at a European art exhibit, perhaps, and brought it back to the United States.

Probably in the '20s?

APPRAISER: Well, it's a sculpture by a very prominent artist.

His name is Paul Troubetzkoy.

And the piece is signed and dated, and it has the foundry mark right here of the Valsuani foundry.

And Valsuani was one of the most prominent foundries of this time.

GUEST: Oh.

APPRAISER: Troubetzkoy was from a very, very famous Russian family.

The Troubetzkoy family were princes going way back, and he was self-taught as an artist.

He worked in Russia, in Italy, and also in the United States, and he sometimes signed Pavel Troubetzkoy's, or Paolo, and this is signed Paul Troubetzkoy.

This piece is actually a portrait.

GUEST: Is it?

APPRAISER: And it's a portrait of Mademoiselle Svirsky.

And an example of this was exhibited in 1912 at the Chicago Art Institute, and it's listed in the catalogue...

GUEST: Really?

APPRAISER: ...of that exhibition.

So it's a portrait of a specific dancer.

Troubetzkoy was known for portraits of various dancers, of celebrities.

He did a portrait of Franklin Delano Roosevelt.

But he particularly liked dancers, and I think what's so wonderful about his work is how it captures this whole spirit of the dance.

This is the time of Isadora Duncan and this much freer kind of dancing, rather than classical ballet.

And I think that's exemplified in the way her costume is rendered, in this almost impressionistic fashion.

Usually, you think of bronzes as cold, hard surfaces, but you have all these wonderful surface embellishments that I think make the piece very, very exciting.

Now, his work has become very, very popular.

It's particularly popular because it now appeals to Russians, and, as you know, the Russians are a very active part of the art market.

GUEST: Mm-hmm.

APPRAISER: Work by Troubetzkoy sometimes is sold as American, and it's also sold as Russian.

I did find the identical sculpture coming up in a sale this spring.

GUEST: Really?

APPRAISER: And it sold in New York for $62,500.

GUEST: (laughing) Oh, my God, you're kidding.

APPRAISER: So in a gallery setting, I think this would easily bring in that $60,000 range, if not more.

GUEST: She's just been a very strong part of all of our lives, and so we've just loved her.