The Saxonia Thin is considered the brand’s entry-level watch by many Lange enthusiasts (and the 37mm version is the brand’s least expensive offering). First you had the Saxonia Thin in 40mm for $24,500, and then the 37mm version was released in 2016 with an astounding $14,900 retail price. This year we have the Saxonia Thin Blue Copper in white gold, which measures a comfortable 39mm in diameter, a new size for the model. But that’s not all. There is a new dial treatment on this Saxonia Thin too. What looks like Aventurine is actually a solid silver dial coated with a thin layer of goldstone (also called Aventurine glass, not to be confused with the hardstone itself), and there are microscopic copper oxide crystals layered in the coating (hence the name Blue Copper). The technique dates back to 17th-century Venice and creates a shimmering effect. The watch itself is powered by the caliber L093.1 manually-wound movement, the same one used in the 37mm and the 40mm Saxonia Thin models.