About the Seth Thomas “Office” Clock
Title: Seth Thomas “Office” Clock Model: A Collector’s Guide
The Seth Thomas “Office” Clock, introduced in the late 19th century, is a distinctive mantel clock model that embodies both functionality and elegance. This timepiece was designed primarily for office or commercial settings, making it a unique addition to any antique clock collection.
Typical case materials for the Seth Thomas “Office” Clock include cast iron and brass, often featuring intricate designs such as Greek key patterns, floral motifs, and geometric shapes. The clock’s compact size (approximately 10 inches tall) makes it suitable for various spaces while maintaining a substantial presence due to its weighty materials.
The “Office” Clock was produced from the late 1800s through the early 1900s, making it an ideal choice for collectors interested in the Victorian era or early 20th-century American industrial design. One of the reasons this model is collectible lies in its rarity compared to more common mantel clocks like the Regulator style.
Notable features of the Seth Thomas “Office” Clock include a hidden winding mechanism at the top of the case, which adds to its distinctive appearance. The clock face usually displays Roman numerals and features a seconds hand, offering both practicality and aesthetic appeal. Additionally, some versions may have a strike feature, adding an audible element to this visually striking timepiece.
Collectors should pay close attention to condition, as many “Office” Clocks have been repurposed or refurbished over the years. Original features such as patina, dial quality, and working mechanisms significantly impact value. As with any antique clock acquisition, researching specific examples and consulting experts can help ensure a wise investment in this captivating Seth Thomas model.
Auction Records and Price History
The following 2 auction record(s) show actual sale prices for the Seth Thomas “Office” 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 30 Day – Variant” wall hanging clock with a spring driven 30 day timepiece movement in an “old oak” case.
This clock has the exact same case as the “Office 30 Day” described in Tran Duy Ly’s Third Edition Volume 1 (page 339) with the exception of the case top piece which is different. The case shows no evidence of ever having a different top piece. The case has a nice original finish. The original painted dial is in excellent condition. The hands are original. The movement is signed. The glasses are original.
Sold: $500 | Date: April 29, 2017 | Source: R. O. Schmitt Fine Arts

C.1865, Seth Thomas Clock Co., OFFICE timepiece, 8-day, spring, in a rosewood case with geometric tablet over pendulum.
Condition: well, this is as close to excellent original condition as you can come; has great patina on original finish, good painted dial, great tablet, hands, pendulum, label. See Ly’s book on Seth Thomas, page 337 [3rd Edition] Ht 25″
Sold: $650 | Date: May 8, 2009 | Source: R. O. Schmitt Fine Arts








