A. Lange & Sohne Saxonia Thin Copper Blue in 18K White Gold 205.086

A. Lange & Söhne Saxonia Thin Copper Blue 18K White Gold 205.086 The Saxonia Thin model was first introduced in 2011 with a 40mm diameter (Retail Price: ~$24.5k), followed by a 37mm version launched in 2016 at a much more accessible price point (Retail Price: ~$14.9k). With its slim, compact, and highly wearable design, Lange streamlined everything structurally possible to create an optimal timepiece for users, focusing purely on the essential function of timekeeping. In early 2018, Lange unveiled a new Saxonia Thin featuring a 39mm diameter, a mere 6.2mm thickness, and the striking addition of a Copper Blue dial. Copper Blue, also known as Goldstone, is a type of glass that closely resembles Aventurine (a glass treated to achieve an aventurescent surface effect, mimicking the sparkling flecks found in natural quartz, available in various colors). Lange elegantly refers to it as "golden flux"—a material rarely utilized by top-tier watchmaking brands, yet always highly sought after whenever it makes an appearance. The process of creating "Copper Blue" is exceptionally complex. It begins by melting a combination of silica and copper oxide together. The mixture is then subjected to a slow cooling process to achieve the precise crystallization (the copper must crystallize before the glass fully hardens). Furthermore, the oxygen content must be strictly controlled at a low level to prevent the copper from oxidizing too intensely. Because of this intricate and demanding process, very few manufacturers are able to produce and incorporate this special material into their watch dials. This 39mm version is powered by the in-house manual-winding Calibre L093.1, boasting an impressive 72-hour power reserve. This is genuinely a timepiece that "punches above its weight," thoroughly deserving a place in the collection of any devoted A. Lange & Söhne enthusiast.