The tourbillon movement, one of the most elegant complications in the world of horology, has played a crucial role in Arnold & Son's history. An exceptional watchmaker, John Arnold was an active participant in one of the most extraordinary partnerships in the world of innovative horology. Indeed, both he and A.-L. Breguet worked closely, sharing both their knowledge and passion. Evidence of their partnership is A.-L. Breguet's first ever tourbillon mounted in John Arnold's No. 11 movement, a watch that can be found today in London's British Museum.
Functions Hours, minutes, tourbillon
Caliber A&S8100 Exclusive Arnold & Son mechanical tourbillon movement, hand-wound, 19 jewels, diameter 32.6 mm, thickness 6.30 mm, power reserve 80 h, 21,600 vibrations/h. Movement decoration: nickel-silver and sapphire movement, rose gold treated bridges and NAC grey treated main plate with superlativeHaute Horlogerie finishing: hand-chamfered bridges with polished edges, A&S specific pattern engraved on the main plate, circular satin-finished wheels with hand-chamfered and polished edges, screwed gold chatons, mirror-polished tourbillon cage and bridge, screws with bevelled and mirror-polished heads.
Case 18-carat red gold, diameter 44 mm, cambered sapphire with anti-reflective coating on both sides, case back see-through sapphire
Dial Anthracite open dial
Strap Hand-stitched brown or black alligator leather