Arnold & Son Constant Force Tourbillon 11

The Constant Force Tourbillon 11 timepiece, designed to commemorate the conclusion of the 260th-anniversary celebrations of John Arnold’s legacy, pays homage to the watchmaker’s ingenuity and his close association with Abraham-Louis Breguet. The 41.5 mm diameter watch, crafted in 18-carat yellow gold, is powered by a hand-wound mechanical movement featuring a constant force mechanism, visible on the enamel dial, and is regulated by a tourbillon on the reverse side. The architecture of the calibre draws inspiration from the timekeeping instrument driven by the first tourbillon created by Abraham-Louis Breguet in 1808, based on a chronometer movement designed by John Arnold.