Seth Thomas (1785-1859) began his clockmaking career in 1807 as an apprentice to renowned clockmaker Eli Terry. In 1810, he bought Terry’s Connecticut factory and began making tall clocks with wooden movements.

Thomas added wooden-movement shelf and mantel clocks in 1817. The first of these had pillar-and-scroll cases, usually with a scene painted on the bottom third of the case below the clock’s face. Around 1830, antique Seth Thomas mantel clocks were frequently framed in carved mahogany.

Brass movements replaced wooden ones in 1842 (wood was phased out entirely in 1845), which was also the first year that Thomas made mantel clocks with ogee cases—the style was produced until 1913.

Though an innovator when it came to production techniques and business, Thomas was rather conservative when it came to the appearance of his clocks. So, after his death in 1859, Thomas' sons were quick to introduce new clock styles—from handsome wall clocks to regulators to spring-driven clocks to clocks with calendars.

Of the calendar clocks, the Seth Thomas antique wall clocks for kitchens were particularly popular. One early double-dial calendar clock made shortly after the founders’ death had a rosewood-veneer case that came to points at the top and bottom to earn itself the nickname of "Peanut." Walnut kitchen clocks were produced from 1884 to 1909.

One of the toughest competitors for U.S. clockmakers in the second half of the 19th century were the French, whose clocks cased in onyx and marble were all the rage. In response, U. S. manufacturers made clocks that resembled those of the French, except instead of marble, they made their cases from less expensive iron or wood.

Thomas responded to the French challenge with its own line of marble clocks (1887 to 1895) and iron clocks finished in black enamel (1892 to 1895). But the Thomas response that i...

Adamantine was a veneer developed by the Celluloid Manufacturing Company—Thomas licensed the veneer because it could be produced in black, white, and a variety of patterns to replicate the look of wood, onyx, and, most importantly, marble. The Seth Thomas Adamantine mantel clocks were popular enough to remain in production until 1917.

Another trend from the late 19th century was the practice of naming a clock after international cities. Thomas did that, too, using names like Milan, Genoa, and Naples to evoke the style of a particular clock. Thomas also had a City Series of clocks named after U.S. cities. The Atlanta clock, for example, had a rosewood case with gilt details and a glass door that had been etched in a leaf pattern. Even Utica got its own clock. The City Series was produced for roughly 40 years.

Thomas clocks were also named after presidents (Lincoln, Garfield) and royalty (Victoria). Others were named after universities, from Cambridge to Cornell.

In the 20th century, Thomas introduced its first tambour clock in 1904. The low, wide profile of these mantel clocks made them perfect above fireplaces. Chime clocks followed in 1909, and electric clocks were added to the company’s catalog in 1928.

Of the pre-war, 1930s Thomas clocks, the Art Deco alarm clocks (wind up or electric) made of a colored plastic called Catalin are highly collectible. Unlike Bakelite, which was opaque due to its fillers of sawdust or carbon, Catalin is transparent, which made it easy to mix with dyes to produce rich colors. It could even be marbleized, which, for Thomas, recalled the company’s Adamantine clocks produced just a few decades earlier.

Key terms for Antique and Vintage Seth Thomas Clocks:

Ogee: A type of molding whose profile resembles an S-shape curve.

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Recent News: Seth Thomas Clocks

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Old timepiece working and clean atop LP High
LaSalle News Tribune, July 2nd

The old clockworks bear a nameplate, “Made by Seth Thomas Clock Co., Thomaston, Conn., USA, No. 2647, November 30, 1927.” This is the year this section of the school was constructed. You also will find “1927” over the main entrance under the clock ...Read more

Apartments, solar array and more on deck for historic Kingsley Building, July 1st

boutique used clothing store. In 2013, the building's original Seth Thomas clock was restored on the east facade. The 89-year-old structure is the tallest building in the immediate area and is built on an old lumberyard once owned by a Grand Rapids...Read more

117-year-old clock, bell to go home
Post-Bulletin, June 30th

The Central Fire Station clock and bell were originally installed on the south side of Fourth Street and South Broadway Avenue in 1898. The Seth Thomas clock was a primary timepiece for the city, and the 1,200-pound bell sounded the alarm for firefighters...Read more

Rare antique lamps, clocks, coin-ops and more will be at Fontaine's three ...
ArtfixDaily, June 15th

One is a Pennsylvania tall case clock, 105 inches tall, having a 14-inch painted iron dial with center seconds sweep and a pendulum signed and dated “L. Masgreave, 1797.” The other is a Seth Thomas off-center pillar and scroll clock with inside/outside ...Read more

Family clock repair business stands the tests of timepieces
Charleston Gazette, May 30th

The couple was aided in their decision by the fact that it's harder and harder to find someone who can fix classic old clocks like those made by Seth Thomas, Waterbury and Ansonia, not to mention the wide variety of cuckoo clocks that come into the...Read more

Tiffany scenic leaded window and lamps, plus Howard & Davis and Seth ...
ArtfixDaily, May 12th

PITTSFIELD, Mass. – A one-of-a-kind Howard & Davis astronomical regulator clock and a rare Seth Thomas No. 20 standing regulator clock with Grande Sonnerie strike and repeat could both reach or surpass $100,000 at a cataloged antique auction ...Read more

Antique wall clocks targeted by thieves at Northwest Fresno law firms, March 16th

The criminals didn't stay inside the buildings long. The victims say they broke through the door and went right for the antiques on the wall. Attorney Michael Margosian's office wall now has an empty spot that used to house an antique Seth Thomas No. 2...Read more

Antiques & Collectibles: Seth Thomas regulator clock a timeless favorite
Press of Atlantic City, March 6th

Question: What can you tell me about an old oak wall clock left in an office building I recently ac-quired? It is 37 inches long, 16 inches wide and 5½ inches deep with a brass pendulum and weight. Its metal dial is painted white, has Roman numerals, a...Read more