About the Seth Thomas “Octagon long drop” Clock
Title: Seth Thomas “Octagon Long Drop” Clock Model: A Collector’s Guide
The Seth Thomas “Octagon Long Drop” clock, a timeless masterpiece from the renowned American clockmaker, is a mantel clock of exquisite craftsmanship and design. This model, identified by its unique octagonal case with an extended drop, was produced predominantly between 1870 and 1900, during the company’s Golden Age.
The Octagon Long Drop clock boasts a case typically made of mahogany, walnut, or cherry wood, each choice adding to its charm and value. The octagonal shape, combined with the long drop element, gives this model an elegant and distinctive appearance that stands out in any collection.
What makes the Seth Thomas Octagon Long Drop clock a sought-after piece among collectors is not just its aesthetic appeal but also its historical significance and superb engineering. Notable features include a 16-day time-and-strike movement, a silvered dial with Roman numerals, and a finely crafted pendulum visible through a glass door. Additionally, the clock’s striking mechanism produces a deep, resonant chime that adds to its charm and collectibility.
Investing in a Seth Thomas “Octagon Long Drop” clock is an excellent choice for antique clock enthusiasts due to its quality construction, iconic design, and enduring appeal. As with any antique, condition, authenticity, and provenance play significant roles in determining the value of this piece. It’s always advisable to consult with a professional appraiser or join collectors’ groups for accurate valuation and insights into acquiring the best examples of this coveted model.
Auction Records and Price History
The following 1 auction record(s) show actual sale prices for the Seth Thomas “Octagon long drop” model clock. Prices vary based on condition, originality, and current market demand. Search for more records on AntiqueClocksPriceGuide.com.

Antique Seth Thomas Octagon long drop Clock
Jul 2020 – 214 Antique American Clocks Seth Thomas long-drop octagon clock, 1888. The 31-inch oak case would appear to be the same as used for the early Globe models, but it holds an 8-day, time-only movement (ST No. 41) with a front-mounted pendulum. that the pendulum bob is suspended on a wire rather than on a rear-mounted pendulum stick. I would assume that this is a less expensive option than the Globe, but it is not shown in Ly’s books on Seth Thomas clocks; I cannot find an example in the Antique Clocks Price Guide either. There is no evidence that the movement is not original to the case ( additional screw holes). The dial pan is new, as are the hands; the old glass in the bezel was replaced some time ago, the lower glass is newer as well. The pendulum bob is not Seth Thomas issue. There is a black Seth Thomas label inside (not visible in the photo as it is behind the framing), and the back is stamped with the date of manufacture (Oct 1888). The clock is running and keeping time.
Retail: $50 | Date: 07/01/2020 | Source: AntiqueAmericanClocks.com