In , the company began to use brass movements. Wood movements were no longer in use after The Seth Thomas family business introduced regulator clocks in , and spring-driven clocks between and Between and , the company produced perpetual clocks.
Dating seth thomas adamantine clocks
Between and , most Seth Thomas clocks were stamped in ink with codes on the bottom or on the case back. Note that many Seth Thomas clocks were reverse date stamped with the year and then a letter for the month of production. Be aware that some Seth Thomas clocks are not marked. In these cases there may at least be a paper label that will tell you the name of the manufacturer, where the clock was produced and the date of manufacture.
Dating a Seth Thomas Movement | NAWCC Message Board
Unfortunately, these labels may not be intact enough to gain additional information. Identify some Seth Thomas clocks that are neither marked nor have paper labels by being familiar with the styles of clocks. Styles have changed over the years and will aid in determining the time frame in which the clock was made.
Use a good book, either purchased or from a library, to match time frames of clocks with styles and makers. Sylvia Harrison's professional career began in when "Lilly Lightlace" was published in the American Poetry Anthology. Famous American clockmaker Seth Thomas began his career as an apprentice to renowned clockmaker Eli Terry in , but by , he had purchased the clock factory from Terry and had begun producing his own clocks.
Identifying a vintage mantel pendulum clock by Seth Thomas is sometimes difficult since he often hid the pendulum behind a small wooden door or delicately painted glass. Thomas started making shelf and mantel clocks in with pillar and scroll cases and a scene painted on the bottom third of the case.
Dating a Seth Thomas Movement
By , the frame of an Thomas mantel clocks was often constructed in a deep, rich, dark mahogany wood. Examine your mantel clock for the type of wood used in its production. Until about , Seth Thomas used walnut veneer in the production of his clocks.
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From , his factory used walnut, cherry and oak; in about , his company began to use both mahogany and oak in clock case construction. Identify the type of movements in the clock.
Early Seth Thomas clocks employed wood movements, but in , brass movements replaced the wood. Examine the hands on the face of the dial as they are a very distinctive, telltale feature.
- How to Date a Seth Thomas Mantel Clock.
Up until , the hands featured an embellishment a third of the way down from the top that resembled a small bird with wings and tail protruding from the clock hand. Later clock hands had a softly formed arrow with a round bottom on their tips. Other clock hands featured a circle one-third the way up on each hand.
Look for the remains of a label or the full paper label on the clock on its back, bottom or inside.
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Thomas used primarily paper labels throughout the years he manufactured his mantel pendulum clocks. Study the pendulum inside the clock to determine if it has an etching on it. Sometimes Thomas added a picture of his clock factory on the pendulum with his name centered on its outer edge. Turn over the clock carefully and look for a metal plate that identifies the clock as a Seth Thomas clock. If you do not find a plate on the bottom, open up the clock and look inside.
Sometimes Thomas etched a metal plate with his name.
If the clock had a patent, he included the patent number and his trademark on the metal plate as well.