Caliber 99.4

It was already when finalizing the development of the Caliber 99.2 that Dirk dreamt of integrating an additional complication – the date. Both masters knew that this would require some more time to develop. The Caliber 99.3 unites the large eccentric second of the Caliber 99.1, the 99.2 power reserve and the new idea of the date display.

99.4 (1) ST

The Case

polished / burnished, double screw union • diameter 42 mm • height 11.5 mm • 1.6 mm sapphire glass on top, slightly domed and antireflected inside • screwed sapphire glass base • oversized crown with embossed manufactory name solid nickel-free stainless steel, polished / burnished

The Dial

central display of hours and minutes • hand date with even day division and clear delimitation of the month end and beginning of the new month at “3 o’clock” • extra large eccentric second display at “9 o’clock” sterling silver with the grained, silky matte finished surface of historical deck watches • numerals and indexes with black print

The hands

steel, hand-polished and heatblued

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The Movement

diameter: 37 mm • height: 4.4 mm • 20 rubies • fast correction of the date by means of a separate button at “2 o´clock” • springing change of date at 0 o´clock • oversized eccentric second display, indirectly driven below the train by means of an intermediate gear, with friction spring and cantilevered second pinion • power reserve 50 hours (+/-5%) • 18,000 semi-oscillations per hour • roségold plated three-quarter plate with yellow gold hand-graving of manufactory name and serial number • Geneva stripe finish • retracing ratchet • double sunburst finish on the crown wheels