About the Seth Thomas “Regulator No. 71” Clock
Title: Seth Thomas “Regulator No. 71” Clock Model: A Collector’s Guide
The Seth Thomas Regulator No. 71 is a quintessential example of American clockmaking craftsmanship, renowned for its precision and elegant design. This timepiece belongs to the regulator category, characterized by their pendulum-driven mechanical movements designed for accurate timekeeping, particularly in scientific or institutional settings.
Typical case materials for the Regulator No. 71 include mahogany, walnut, cherry, and rosewood, with brass or iron accents. The design is often distinguished by its tall, slim profile, standing approximately six feet tall, making it an imposing and attractive addition to any space. A rectangular dial with Arabic numerals and a seconds pendulum provide a classic, timeless aesthetic.
Produced primarily between 1870 and the early 20th century, the Regulator No. 71 is a product of Seth Thomas’ golden age. Its collectibility stems from its exceptional craftsmanship, historical significance, and the rarity of finding an intact original version in good condition today.
Notable features include the intricate brass works, visible through a clear glass door at the bottom of the case. The movement houses a heavy weight-driven, pendulum system that ensures precise timekeeping. Additionally, the Regulator No. 71 is known for its adjustable beat error feature, which allows for fine tuning to ensure optimal accuracy.
For collectors and enthusiasts, the Seth Thomas Regulator No. 71 offers a unique opportunity to own an iconic piece of American horology history. Its impressive size, striking design, and historical significance make it a valuable addition to any antique clock collection.
Auction Records and Price History
The following 2 auction record(s) show actual sale prices for the Seth Thomas “Regulator No. 71” model clock. Prices vary based on condition, originality, and current market demand. Search for more records on AntiqueClocksPriceGuide.com.

C.1939, Seth Thomas, “Regulator No. 71”, with robust No. 68 movement with jeweled pallets and fitted with master contact /at one minute intervals.
Condition: this clock is in very good original condition, with some minor restorations. The inside once had a bracket for pilot clocks on the right side, and notches are there for that bracket. There is a dry split inside the top of the door that is not visible from the outside. For details on this model, see Tran Ly’s book titled Seth Thomas Clocks and Movements, Third Edition, page 314. Height 60 inches
Sold: $2,500 | Date: October 22, 2005 | Source: R. O. Schmitt Fine Arts

C.1939, Seth Thomas, ÓRegulator No. 71Ò, with robust #68 movement with jeweled pallets and fitted with master contact /at one minute intervals.
Condition: this clock is in very good original condition, with some points that need mentioning. The inside once had a bracket for pilot clocks on the right side, and notches are there for that bracket. There is a dry split inside the top of the door that is not visible from the outside. This clock hung in Houston in the office of a petroleum executive for the last several years. For details on this model, see Tran LyÕs book titled ÓSeth Thomas Clocks and Movements, Third Edition, page 314. Recall Howard used similar ÒlaboratoryÓ styling on their RegÕr #74. Ly values this clock at 5500 dollars. Height 60 inches
Sold: $0 unsold | Date: October 31, 2004 | Source: R.O. Schmitt Fine Arts