GUEST: My parents moved to California to Pasadena in 1941, and that summer, they liked to go to estate sales. And so at one of the estate sales, they purchased this. They always said it was a ginger jar.

APPRAISER: A ginger jar, yes. Do you know where it comes from?

GUEST: No, I don't know whether it's China or Japan.

APPRAISER: It's actually Japanese.

GUEST: All right.

APPRAISER: And it's from late 19th century. It's a very rare piece and a fantastic color, and it has a wisteria, and it has a name of the maker. It's clearly written in two places. The signature is here. It says "Makuzu Kozan zhi"-- made by Makuzu Kozan. And here, too. There are many collectors of this in America, so if we talk about the price, at auction, it could make $8,000 to $10,000.

GUEST: Oh, my goodness!