A. Lange & Sohne Presents Grand Lange 1 “Lumen” Watch

Dec 12, 2012
A. Lange & Sohne unveils its new Grand Lange 1 “Lumen” watch. The novelty demonstrates a semi-transparent dial that reveals the ingenious mechanism of the first luminescent outsize date display created by the brand.

The timepiece, presented in a platinum case, is available in a limited number of 200 pieces.

The initially introduced Lange outsize date display on the asymmetric dial enjoyed great success in the world of watchmaking and has been more than once imitated by other watch producers. The brand’s models with this kind of display have become true icons of classic design. Yet, the solid-silver dial concealed the secret behind the sophisticated mechanism that provided the unique date display.

This year, watch lovers will be excited to find out that the Grand Lange 1 “Lumen” watch reveals this secret. The dial is built using a semi-transparent sapphire crystal. The brand’s watchmakers used blackened silver only for the outer ring and the surfaces of the displays for hours, minutes and small seconds. The sapphire crystal surfaces allow to drop a glance at the disc mechanism of the first outsize date display glowing in the dark. Moreover, the time and the power reserve are highly legible even in the dark.

The creators of the new A. Lange & Sohne watch wanted to guarantee maximum luminosity for the date display, even just after the switching operation. They came up with an ingenious solution. While the tens cross was provided with a white luminous coating and then imprinted with black numerals, the units disc is built with help of transparent glass imprinted with black numerals and performs rotations before a luminous background.

The sapphire crystal sections of the dial are provided with a special coating used for blocking most of the visible spectrum of light. As for the invisible UV light spectrum, the coating is not an obstacle for it. It implies that UV radiation can pass through and reach the luminous surfaces of the outsize date display. Here comes an exciting side effect. The date platform with its hand-applied perlage, usually visible only to watchmaker during the assembly, has now become visible to the watch owner. The small, overlapping circular graining created by hand with help of a rotating abrasive peg is normally hidden beneath the dial.

The sapphire-crystal case-back of the new A. Lange & Söhne Grand Lange 1 “Lumen” watch reveals the beautiful craftsmanship of the L095.2 manually wound manufacture movement. The movement reflects the brand’s most exacting quality standards. The 400-part, 42-jewel movement, beating at a frequency of 21,600 semi-oscillations per hour, gives an advantage of a 72-jewel power-reserve.

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posted by: / Dec 12, 2012

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