On the occasion of the Only Watch 2019 charity auction, Jaeger-LeCoultre is presenting its new creation: the Master Ultra Thin Perpetual Enamel Chestnut. In keeping with the emblematic aesthetic codes of the Master Ultra Thin collection, this new piece highlights the talents of the Manufacture’s artisans who work together in the Rare Handcrafts™ (Métiers Rares®) workshop.