About the Seth Thomas “Marble No. 99” Clock
The “Marble No. 99” mantel clock, manufactured by Seth Thomas Sons and Co., Thomaston around 1882, is a captivating addition to any collector’s repertoire. This timepiece boasts an impressive black marble case, adding a touch of elegance to its design.
The clock operates on an 8-day time/strike mechanism, providing consistent and reliable functionality. Despite being near the end of Seth Thomas’ competitive phase against the influx of French clocks in the late 19th century, this piece showcases their unwavering craftsmanship. The porcelain dial, while featuring a minor repair around the right winding hole, retains an appealing appearance.
The clock’s case, made from imported marble and onyx, exhibits minor chips on some sharp edges and the back edge of the side molding. Despite these minor imperfections, the “Marble No. 99” remains a fine example of the era’s clockmaking artistry, making it an appealing choice for both novice and experienced collectors alike. Standing at approximately 10.75 inches in height, this clock offers a striking presence in any collection.
Auction Records and Price History
The following 1 auction record(s) show actual sale prices for the Seth Thomas “Marble No. 99” model clock. Prices vary based on condition, originality, and current market demand. Search for more records on AntiqueClocksPriceGuide.com.

C.1882, Seth Thomas Sons and Co., (Thomaston), “Marble No. 99”, 8-day time/strike mantel clock, black marble.
Condition: Imported marble and onyx case has minor chips on some of the sharp edges of the case and a chip on the back edge of the side molding. Porcelain dial has a little repair around the right winding hole, but still looks good. Round plate movement is signed as in the headline. This was near the end of Seth Thomas’ effort to compete head on with the French onslaught of clocks that were pouring into New York and Boston harbors; dial on this is signed simply Seth Thomas, as they were using up the “Sons” movements that were left over after they were absorbed into the Seth Thomas Clock Co. in 1879. Nice beginner level clock. Height 10.75 inches
Sold: $160 | Date: May 6th, 2006 | Source: R. O. Schmitt Fine Arts