About the Seth Thomas “Chime Clock No. 12” Clock
Title: Seth Thomas “Chime Clock No. 12” – A Collector’s Delight
The Seth Thomas “Chime Clock No. 12,” often referred to as the “Stanley” or “Schoolmaster” clock, is a quintessential mantel clock from the esteemed American clockmaker. Produced primarily between the late 19th and early 20th centuries, this model embodies the company’s commitment to craftsmanship and innovation.
The typical case of the Chime Clock No. 12 is constructed from hardwood veneers, such as mahogany or walnut, giving it a rich and elegant appearance. The design features a rectangular case with a flat top, perfect for placing on a mantel or shelf. The dial, usually white enamel with Roman numerals, sits behind a glass cover, while the pendulum and weight hang below.
This clock model is highly collectible due to its timeless design, excellent craftsmanship, and historical significance. Its production spanned over several decades, making it accessible for many antique clock enthusiasts. Notable features include the Westminster chime mechanism, which plays the well-known melody every hour, and the striking spring motor, allowing the clock to function without winding for a week at a time.
In addition to its practicality and aesthetic appeal, the Seth Thomas “Chime Clock No. 12” holds a special place in American horology history. Its enduring popularity among collectors is well-deserved, making it a valuable 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 “Chime Clock No. 12” model clock. Prices vary based on condition, originality, and current market demand. Search for more records on AntiqueClocksPriceGuide.com.

C.1910, Seth Thomas Clock Co., “Chime Clock No. 12”, 4 bell Sonora chime mantel clock, in oak and in very good original condition.
This model was discontinued by 1915 and replaced by the more popular mahogany models. Note this model in the catalog for 1909, shows little brass pad feet, however, these oak skids are definitely original to this case. The silvered dial has some wear and oxidation commensurate with its age, but we would leave it alone. The hands are original. Note this is a large clock with 8Ó dial Height 17Ó $500-$700
Sold: $610 | Date: 11/3/2002 | Source: R.O. Schmitt Fine Arts