About the Seth Thomas “Octagon Lever” Clock
Title: Seth Thomas “Octagon Lever” Clock: A Collector’s Delight
The Seth Thomas “Octagon Lever” clock is a quintessential mantel clock, designed to gracefully adorn homes and offices during the late 19th century. This model, produced primarily between the 1860s and the early 20th century, embodies the elegance and craftsmanship that Seth Thomas Clock Company was renowned for during this era.
The Octagon Lever clock features an octagonal case made from high-quality mahogany or walnut, with intricate brass ornaments accentuating its design. The dial is often white enamel, with Roman numerals and a seconds hand—a unique feature among mantel clocks of the time. The pendulum bob can be found inside the case, visible through an opening at the bottom.
What makes the Seth Thomas “Octagon Lever” clock collectible is its combination of style, functionality, and rarity. Its iconic octagonal shape, coupled with the distinctive lever movement, sets it apart from other mantel clocks. Furthermore, the high-quality materials used in construction ensure that these clocks have aged exceptionally well, making them sought after by antique collectors.
Notable features of this model include the lever escapement mechanism—a design that offered improved timekeeping accuracy compared to earlier clock movements. Additionally, the use of a compensated pendulum helped reduce the effect of temperature and gravity on the clock’s performance. These features, along with the decorative appeal of the case, make the Seth Thomas “Octagon Lever” clock an essential addition to any antique clock collection.
Auction Records and Price History
The following 1 auction record(s) show actual sale prices for the Seth Thomas “Octagon Lever” model clock. Prices vary based on condition, originality, and current market demand. Search for more records on AntiqueClocksPriceGuide.com.

This Is An 8 Day “Octagon Lever” Wall Clock, Made By The Seth Thomas Clock Co., In Thomaston, Conn., Circa 1890-1900.
The Paper Dial Is Somewhat Distressed And The Glass In The Brass Bezel Is A Replacement. The Rosewood Veneered Case Is In Good Condition With Some Minor Veneer Chipping. The Movement Is The Tried And True, Doulble Spring No. 10 Workhorse Lever Movement. Height 11″ X Depth 3 1/2″
Date: February 23, 2005 | Source: Clocksmith