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A. Lange & Söhne

1815 Moon Phase "Hommage to F A Lange" - a pictorial

 

Two years ago, A Lange & Sohne paid tribute to the founder of the German watchmaking dynasty with the "Hommage to F A Lange" edition, comprising three iconic timepieces:

* The TOURBOGRAPH "Pour le Merite"

* The LANGE 1 TOURBILLON

* The 1815 MOON PHASE

The hallmark of these limited edition (265 pcs) masterpieces is a totally new alloy of remarkable hardness and radiance: 18 carat honey-colored gold.

I was fortunate enough to lay my hands on one such piece and made a hasty post about it, but promised to take some proper pictures when I have the time.

The 1815 Moon Phase is characterised by its meticulously guilloched central segment dial, the blue lustre of the moon phase indicator and of the hands, and superb sunburst finishing of the movement. The outer portion of the three-quarter plate displays the hand-engraved signature "A. Lange & Sohne/Sa." and the balance cock carries unique hand engraving, a task mastered by only a handful of watchmakers at Lange.

Rather than using the rounded value of 29.5 days for the lunar month, the 1815 MOON PHASE operates on a mean orbit of 29 days, 12 hours, 44 minutes and 3 seconds. Each watch is delievered with a moon phase time table. So long as the watch runs without interruption, it offers astronomic precision for 30 generations - the moonphase display would have to be corrected by a day in 1058 years!

Without further ado...here are some wonderful pictures taken by my friend Ogyia:

 



Escapement:


Hacking and balance - the balance spring operates at the rate accuracy of 100 nanometres (about 1/100 part of the diameter of a human hair). Truly mind-boggling...



Screwed gold chatons:





The guilloched central dial:


Superbly engraved balance cock:


The immaculately finished three-quarter plate:


Hope you enjoyed these pictures.

Sam



 

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