One of the hallmarks of the “25th Anniversary” collection celebrating the LANGE 1 family is the hand-engraved balance cock with blue accents. Even the relief-engraved number “25” that graces the balance cock in commemoration of the 25th anniversary of this timepiece is blue.
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Any direct contact with the German silver components would harm the material. Every fingerprint would leave permanent traces, becoming visible after a few days. To make sure neither humidity nor acid touches the surface, the watchmakers always have to wear finger cots.
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In the mid-19th century, Ferdinand Adolph Lange was already using German silver for his legendary pocket watches, especially the plates. Still today, German silver is used by A. Lange & Söhne and highly appreciated on account of its favourable properties.
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While German silver was galvanically gold-plated in the past, it remains “untreated” today. Over the years the surface takes on a patina with a golden hue. This aesthetic effect is an aspirational phenomenon because it allows the material to age gracefully and highlights the finishing.
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German silver is material of choice for all plates and bridges, including the switching lever bridge of the 1815 RATTRAPANTE PERPETUAL CALENDAR. Its special properties ensure the reliability of the calibre. Over time it acquires a warm golden hue that protects the surface.
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The time bridge is a distinctive element of the ZEITWERK. It constitutes the stage for all time indications: jumping hours, jumping minutes and small seconds. In terms of design the time bridge is part of the dial, but in terms of construction it is part of the movement. It must therefore meet the same high standards of stability and aesthetics as the other movement parts. That's why A. Lange & Söhne uses German silver for this component.
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At A. Lange & Söhne, the manually engraved balance cock is made of German silver, an alloy of copper, zinc and nickel. In 1823, its industrial production was initiated by the Saxon “Society for the promotion of artisanal industriousness”. Due to this history, it is commonly referred to as “German silver”.
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The ultimate chronograph (6/6)
Calibre L132.1 of the TRIPLE SPLIT consists of 567 tiny components. It is lavishly decorated with various finishing techniques such as the Glashütte ribbing seen on this chronograph-rattrapante bridge made of untreated German silver. Every movement is crafted to the highest A. Lange & Söhne quality standards, double-assembled by hand and finally precision-adjusted in five positions.
Picture: Chronograph-rattrapante bridge of the TRIPLE SPLIT
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The ultimate chronograph (5/6)
A glance through the TRIPLE SPLIT’s sapphire-crystal caseback reveals the meticulously choreographed interaction of wheels, levers, springs, clutches, and jumpers, illustrating the stunning complexity of calibre L132.1. The multiple arbor configuration of the threefold rattrapante mechanism requires the ultimate in dexterity and extreme patience on the part of our watchmakers.
Picture: Calibre L132.1 of the TRIPLE SPLIT
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The ultimate chronograph (4/6)
The TRIPLE SPLIT’s flyback function involves all three hand pairs. So the chronograph can be reset – and instantly restarted, if needed – by pressing the lower chronograph pusher. This is even possible during an ongoing measurement.
Video: Flyback mechanism of the TRIPLE SPLIT in action
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The ultimate chronograph (3/6)
The blued-steel hand of the TRIPLE SPLIT’s continuous rattrapante hour counter is just a small part, but it makes a huge difference. In combination with its minute and central seconds counterparts, it enables the wearer to measure comparative times within a range of up to twelve hours.
Picture: Close-up of the TRIPLE SPLIT hour counter hands
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The ultimate chronograph (2/6)
Despite the highly complex movement that had to be developed for the TRIPLE SPLIT’s unique complication, the timepiece’s appearance still demonstrates a maximum of clearness and readability. The rattrapante hands, for example, are only visible when the triple rattrapante function is activated.
Picture: TRIPLE SPLIT with all three rattrapante hands visible