About the Seth Thomas “Office Calendar No. 11” Clock
Title: Seth Thomas “Office Calendar No. 11” Clock Model
The Seth Thomas Office Calendar No. 11 is a unique and practical wall clock model, designed for both utility and aesthetic appeal. Originating from the renowned Seth Thomas Clock Company in the early 20th century, this clock stands out among other antique clocks due to its calendar functionality integrated within the design.
Typical case materials for the Office Calendar No. 11 consist of mahogany or walnut woods, with brass accents and a distinctive enamel dial. The rectangular shape, combined with elegant lines and intricate details, reflects the Art Deco style popular during its production era. The clock measures approximately 32 inches in height and 14 inches in width, making it suitable for both residential and commercial settings.
What makes the Office Calendar No. 11 a desirable collectible is its combination of stylish design, useful calendar function, and association with the Seth Thomas brand – known for producing high-quality clockwork since the mid-19th century. The integrated calendar feature, displaying both month and date, adds to its practicality and collectibility.
Notable features of the Office Calendar No. 11 include a swinging pendulum visible through the front glass, Roman numerals on the dial, and an ornate brass bezel surrounding the face. The clock’s movement is typically a Seth Thomas No. 23 or No. 24 time-only movement, ensuring accurate timekeeping for over a century after production.
For antique clock collectors, the Seth Thomas Office Calendar No. 11 offers a unique blend of design aesthetics, functionality, and historical significance, making it an excellent addition to any collection focusing on American clockmakers or Art Deco pieces.
Auction Records and Price History
The following 2 auction record(s) show actual sale prices for the Seth Thomas “Office Calendar No. 11” model clock. Prices vary based on condition, originality, and current market demand. Search for more records on AntiqueClocksPriceGuide.com.

Seth Thomas Clock Co., Thomaston, Conn., “Office Calendar No. 11” hanging jeweler’s regulator, 8 day, weight driven movement with perpetual calendar, in a walnut case with carved crest and carved and pierced dial surround and painted metal dials
the case retains its original finish. The dials retain their original paint. The hole for the center arbor has been enlarged, which is unnoticeable when the hour hand is mounted. The calendar mechanism is a proper style reproduction.
Sold: $14000 | Date: May 19, 2018 | Source: R. O. Schmitt Fine Arts

C.1892, Seth Thomas ÓOffice Calendar No. 11Ò, in mahogany, 1- weight, 8-day movement with maintaining power.
Condition: Excellent condition, original, EXCEPT for replacement top, which has been carefully copied from an original by a good cabinetmaker. Other minor nicks and scrapes to the case, commensurate with age. Retains fancy nickeled pendulum with damascene pattern; beat scale intact. We are aware of a recent sale for 32,500 dollars, also with a restored/replaced top, and Ly lists this in his latest price guide at 27,500 dollars. Height 68.5 inches
Sold: $22,000 | Date: October 31, 2004 | Source: R.O. Schmitt Fine Arts