Product Details

text stamped into the metal lists the major design patents for this model:May 24, 1910: The original foundational patent for the Big Ben movement.Feb. 10, 1914: Mechanical improvements to the winding or alarm mechanism.April 15, 1919: Design changes to the case styling.Dec. 4, 1923: The final date stamped, which represents a critical shutter or casing adjustment patent. The clock works loud tick and alarm sounds. The numbers glow with 365 light.