In many ways, every piece of pottery or porcelain is unique. The items could be made by the same artist or company but will still have their own individuality. "The quality of a piece and its ...

Information or research assistance regarding porcelain and pottery marks is frequently requested from the Smithsonian Institution. The following information has been prepared to assist those ...

Q: I bought a white pitcher that I thought was made by the C.C. Thompson Pottery Company. But the mark on the bottom differs from their standard mark. Can you verify my mark? A: To clue readers, C.C.

Don’t always trust the date you find in a pottery mark. A well-known mark, often found on porcelain clock cases for Ansonia clocks, says “Royal Bonn, 1755” in a shield. But the maker was Franz Anton ...

Rookwood pottery, made in Cincinnati since 1880, is perhaps the most popular American art pottery among collectors. The company not only made artist-decorated vases, molded bookends, art-deco ...

Don’t always trust the date you find in a pottery mark. A well-known mark, often found on porcelain clock cases for Ansonia clocks, says “Royal Bonn, 1755” in a shield. But the maker was Franz Anton ...

Dear Judy Campbell: Here are photographs of two gilt-edged porcelain plates that measure about 10 inches diameter that I have owned for a number of years. Both carry five-digit numbers under beehive ...

Rookwood pottery, made in Cincinnati since 1880, is perhaps the most popular American art pottery among collectors. The company not only made artist-decorated vases, molded bookends, art-deco ...

THE PIECE: A French Sevres-style gilt and polychrome painted porcelain box, from about 1900, with marks on the underside -- an "S" within interlocking "Ls" -- emulating Sevres marks used in 1771. THE ...

Q. This is a photo of a covered vegetable dish that is part of a dinnerware set my late husband inherited. The set is a five-piece service for 12 and includes a gravy boat, butter dish and large ...