How to make a high-end watch dial

Impeccable, appealing and perfectly balanced, the dial of a high-end watch is a real tour de force to design and produce. We visited dial manufacturer Quadrance, who works for renowned and mostly classic brands. We followed the process needed to produce a Parmigiani Fleurier Tonda 1950, watching precisely how a plate of brass is transformed into the final product. Did you know, for instance, that one coating comprises cream of tartar, a form of potassium?