Founded: 1764 | Founding place: London, United Kingdom | Founded by: John Arnold | Current headquarters: La Chaux-de-Fonds, Switzerland or London, United Kingdom | Owned by: Citizen Holdings Co., Ltd. or Charles Frodsham & Co. | Official name: Arnold & Son SA
With the Arnold & Son Perpetual Moon 41.5 Platinum Celestial Blue the Perpetual Moon series gets another variant