About the Seth Thomas “Model L1” Clock
Title: Seth Thomas “Model L1” Clock Overview for Antique Collectors
The Seth Thomas “Model L1” is a revered mantel clock in the annals of American horology. This clock, produced during the late 19th century (approximately 1870-1900), falls under the category of mantel clocks due to its compact size, making it ideal for placement on a shelf or mantelpiece.
The Model L1 is renowned for its elegant case design, primarily crafted from walnut, cherry, or mahogany woods. The rectangular case showcases intricate inlays, fluted columns, and finely-turned wooden dials that add to the clock’s aesthetic appeal. Some models may feature brass accents on the hands, pendulum bob, and other decorative elements.
The collectibility of the Seth Thomas Model L1 stems from several factors: its timeless design, association with a renowned American clock manufacturer, and the rarity of finding well-preserved examples due to their longevity and quality craftsmanship. Notable features include a substantial weight, which adds stability; an 8-day movement, ensuring a week’s run without winding; and a striking Westminster chime on the hour and quarter hours.
Additionally, the Model L1 is often found with the iconic “Seth Thomas Clock Company” signature, further enhancing its value as a piece of Americana and an essential addition to any serious antique clock collection. Collectors should pay close attention to the condition of the case, dial, movement, and chime when evaluating potential acquisitions to ensure authenticity and integrity.
Auction Records and Price History
The following 1 auction record(s) show actual sale prices for the Seth Thomas “Model L1” model clock. Prices vary based on condition, originality, and current market demand. Search for more records on AntiqueClocksPriceGuide.com.

Seth Thomas Clock Co. self winding electric master clock, Model L1, ca 1913-1920.
This is essentially a Seth Thomas No. 20 weight driven clock supplied with a factory electric self winding No. 68 movement. It has jeweled pallets with micrometer beat adjustment movement that was recently put in excellent running condition and set up to run using “D” cell flashlight batteries. The mahogany case is unusual for it is flecked and has a swirl design. The finish is an old restoration that has been rubbed out to a nice satin sheen. It has nickel trim in like new condition. The painted dial is 14″ and attached to the movement with four screws. It came with the optional mercury pendulum with original fancy thumb print glass jars. We have the mercury for this clock, but it is not pictured. There are two door locks on the side and a large nickeled beat scale. This is a very unusual battery powered clock that was produced in the teens and early twenty’s. The excellent case is 62″ tall, 17″ wide, and 8.5″ deep. LySeth Thomas, page 375. This rare model has always had an appraised price around $5000.
Sold: $0 unsold | Date: 7/31/2010 | Source: Horton’s Antique Clocks