Cal. ASE 200 is a micro-rotor automatic movement produced by Schwarz Etienne. It is said by the manufacturer to be designed for ladies watches, and lacks the distinctive triple-cock wheel train of the otherwise-similar Cal. ASE 100. Some versions of Cal. ASE 200 feature a running seconds indicator instead of a traditional small seconds subdial, while others have elaborate decoration from Les Ateliers Kari Voutilainen.
Technical features include hacking seconds, a Philips flat spiral terminal coil manufactured by E20, and an in-house fixed-inertia balance wheel.
Schwarz Etienne ASE Family Overview
The ASE family is a series of micro-rotor automatic movements produced by Schwarz Etienne since 2009. The first “manufacture” movements created under Marc Barrachina and Raphaël Radicchi, the family originated with the Cal. BSE1325-A, or “base 13.25 ligne series A”. The family was renamed “ASE” for “Schwarz Etienne Series A” when other movements were added around 2013.
The movement is somewhat larger than the popular automatic movements from ETA at 13.25 ligne (30.40 mm) but is appropriately sized for modern watches. It has many advanced features, notably a tungsten micro rotor for automatic winding, 80 hour power reserve from a single large barrel, and a free-sprung variable-inertia balance. Nearly all components are manufactured in-house apart from the hairspring, which is sourced from Straumann (Breguet curve) or E20 (Phillips flat spiral). Despite the oversized mainspring and slow 21,600 A/h operation, the movement can reach COSC Chronometer accuracy.
The movement has many novel innovations that have made it an ideal choice for third-party luxury watchmakers like Ming. The wheel train is mounted low on the main plate, making room for the thick micro rotor, tall balance and escapement, and large barrel. This also leaves room for complications, and the ebauche is designed with pass-through holes for a chronograph, adjustable central 24-hour hand, big date, or other complication modules. It features small seconds at 6:00 and a standard date wheel is offered.
The original Cal. BSE1325-A measured 5.05 mm thick, but this was retired when the new Cal. ASE 100 and Cal. ASE 120 were introduced. Both of these, and the similar Cal. ASE 200, measure 5.35 mm thick. This new generation of ASE movements shares much of their design with the double-barrel MSE family.