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Description: • cal. 903.0 damascened nickel lever movement, 43 jewels, with 2 diamond end-stone and 6 jewels in gold chatons, one-minute tourbillon with lever escapement, mono-metallic balance, engraved balance cock, adjusted to 5 positions, with fusée-and-chain transmission • matte silvered dial, Arabic numerals, blued steel dagger hands, blued steel and gold split chronograph seconds ahnds, two subsidiary dials for power reserve indication and 30-minute register, aperture for tourbillon regulator, outer ring clibrated for 60 units • polished platinum case ith down-turned lugs, brushed case band with three chronograph pushers to operate the split chronograph , sapphire crystal display back secured by 6 screws • case, dial and movement signed, case further stamped 8/51 • with a platinum Lange folding buckle

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Dimensions: diameter 41.2 mm

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Notes: A. LANGE & SÖHNE
Accompanied by an A. Lange & Söhne Certificate, Instruction Manual, a booklet and a limited edition book. Further accompanied by a wooden presentation box with outer card box. The apex of the German watch maker's complicated line: the tourbograph couples the tradional art of watch making with modern ingenuity. This watch incorporates the chain and fuée mechanism with the tourbillon, perfecting the movement's long-term accuracy, in addition to a spilt seconds chronograph. As a result of this technical achievement, the Tourbograph earned the prestigious German accolade for watch making "Pour Le Mérite". The chain and fusée mechanism of Pour Le Mérite was made of steel, where friction existed with steel on steel. For the present lot, steel was replaced by copper beryllium, a new material with a lower friction coefficient. Composed of over 1000 parts and due to the complexity of assembly, manufacture is limited to 12 pieces per year, and only 51 pieces will be produced. The present example is numbered 8, an auspicious number that phonetically resembles the Chinese word "Fa" meaning "Good Fortune".