Certified by the Montblanc Laboratory Test 500H – hours, minutes, small seconds, chronograph with 30-minute counter
Hairspring with Phillips terminal curve. Screw balance with a diameter of 11.40 mm; moment of inertia is 26 mgcm².
Finished with rhodium-coated German silver plating with circular graining on both sides & hand-chamfered edges, and rhodium-coated German silver briges with “Côtes de Genève”, circular graining on both sides & hand-chamfered edges. Going-train is gold-coated, circular grained, chamfered, featuring diamond hubs on both sides.
