Atelier Pieters Atelier 1 Jour puts a second power-reserve display behind a quiet dial

Atelier 1 Jour presents a warm rose-gold-toned dial with blue accents, small seconds and a discreet reserve aperture at three. The mechanical argument becomes clearer through the back: an elaborate planetary reserve display shares the movement with a one-minute tourbillon. The dial and movement offer two readings of the same remaining energy.

Maarten and Jessica Pieters house their hand-wound T2-03RM calibre in a 43.5 mm platinum case. It provides 50 hours of reserve and uses German-silver bridges made and finished in their atelier. Jour is limited to eight examples, alongside eight Minuit watches. The maker lists CHF148,500 before VAT and an annual capacity of four watches.