Bulle Electric Clock Value Guide

The Bulle Electric Clock represents a horological revolution, being the most successful early domestic electric timepiece ever produced. Patented in 1920 by Maurice Favre-Bulle and Marcel Moulin, these French-made clocks are highly collectible for their unique electromagnetic pendulum system and elegant skeletonized brass movements.

What Is Bulle Electric Clock Worth?

The typical price range for Bulle Electric Clock is $850 - $935 based on recent sales. However, values can vary depending on the item's condition, rarity, and other factors such as:

• The condition and clarity of the glass dome and the silvering on the metal dial significantly impact the $850-$935 valuation.
• Operational status of the electromagnetic coil and the integrity of the original brass skeleton movement.
• Rarity of the specific case style, as over 300,000 units were produced in various configurations between 1920 and 1952.
• Presence of original components versus modern electrical conversions or replaced pendulum magnets.

How to Identify Bulle Electric Clock?

• Look for the signature solenoid coil at the bottom of the pendulum designed to swing over a curved permanent magnet.
• Verify the presence of the original silvered metal dial, often housed under a glass dome with a wooden base.
• Check for the 'Bulle-Clock' branding and patent markings typically found on the movement or dial face.
• Examine the base for a concealed battery compartment, a hallmark of the Favre-Bulle and Moulin design.

History of Bulle Electric Clock

Patented in 1920 by Maurice Favre-Bulle and Marcel Moulin, the Bulle clock was a revolutionary step in horology, utilizing an electromagnetic system powered by a battery hidden in the base. Unlike traditional spring-driven clocks, the Bulle clock used a solenoid coil at the bottom of the pendulum that swung over a curved permanent magnet. Over 300,000 of these clocks were produced in various styles between 1920 and 1952, marking them as the most successful early electric domestic clocks in history.