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A. Kolly SA

Perlage and machining for watchmaking.

We decorate your plates and bridges with perlage, and we machine your watch parts, from one-offs to series. Both are done in our Geneva workshop.

Skeletonised movement plate with perlage
Brass plate with perlage

Perlage and decoration

Perlage and Côtes de Genève on your parts, done on our own decoration machines. One-off, prototype or series: the finish is consistent from one part to the next.

Brass movement bridge

Machining your parts

Plates, bridges, turned components, tooling and inspection gauges, machined in our workshop from prototype to series.

What we make for you

  • Perlage and Côtes de Genève on your plates and bridges
  • Movement plates and bridges
  • Turned components: shafts, stems, pipes
  • Tooling, machining fixtures and inspection gauges
  • Prototypes and pre-series for your developments

Materials: Brass, nickel silver, steel, stainless steel, titanium, gold and precious metals supplied by the customer.

Why choose us for your parts

From prototype to series

From a single part to validate a calibre up to series of 50,000 parts, with the same quality standards.

Perlage, our speciality

We design the ERI decoration machine ourselves: we master the finish from machine set-up to the finished part.

Short lead times, kept

A family business with quick decisions: a small series delivered in one to two weeks.

Certified quality

ISO 9001:2015 quality system since 2005, every series inspected before delivery.

Want to do perlage in your own workshop? We build and sell the ERI Côtes de Genève machine.

See the machine

Let's discuss your next part.

A drawing, a sample or just an idea is enough to get started. You talk directly to a technician.

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