====== A. Lange & Söhne Lange 1 Moonphase ======

{{wst>image_cr|A. Lange & Söhne|Lange 1 Mondphase Platin|A. Lange & Söhne Lange 1 Moonphase ([[platinum]])}}
{{wst>image_r|A_Lange_&_Söhne_Lange_1_Mondphase|A. Lange & Söhne Lange 1 Moonphase (yellow gold)}}
{{wst>image_cr|A. Lange & Söhne|Lange 1 Mondphase Rotgold|A. Lange & Söhne Lange 1 Moonphase ([[red gold]])}}
{{wst>image_cr|A. Lange & Söhne|Lange 1 Mondphase Weißgold schwarz|A. Lange & Söhne Lange 1 Moonphase (white gold)}}

{{wst>image_cr|Lange|L901.5}}
{{wst>image_cr|Lange|L901.5_ZB|Calibre L901.5 (dial side)}}
{{wst>image_cr|Lange|L121.1}}

**Lange 1 Moonphase** is a luxury watch by [[Lange Uhren GmbH|A. Lange & Söhne]]

Variant of the legendary [[Lange 1]], this time with additional [[moon phase]].

One man characteristic of the model of [[Lange 1]] is the design of solid silver dial with asymmetric display. The useful, patented [[big date]] indicator improves the readability of the date when compared to conventional timepieces by about three times. With the UP and DOWN indicator you are always informed about the state of the [[double barrel]] winding - even at night. That is because the power reserve hand, like the hour and minute hands, is provided with a [[luminous coating]]. Below the small second is the radius of the [[moon phase]] display with its lunar disc of gold.

The moon phase of the watch moves continuously and not, as usual, in one or two steps per day. Secondly, the mechanism is calculated so precisely that the display would deviate only after 122.6 years of continuous runtime for one day of the synodic lunar months.

At first the Lange 1 Moonphase was equipped with the [[manual winding]] [[manufacture]] movement [[Lange L901.5|L901.5]] with [[hacking seconds]], [[power reserve indicator]], [[big date]] and [[moon phase]]. Later this would be replaced by the [[Lange L121|L121.3]].

The case is optional in [[platinum]], in [[yellow gold]], in [[white gold]] or in [[red gold]].

<WRAP ud ud_mod>
**Reference:**
  * 109.021 yellow gold
  * 109.025 platinum
  * 109.032 red gold
  * 109.321 yellow gold with gold bracelet
  * 129.025 platinum
  * 129.032 red gold
  * 192.029 white gold, black dial (2016)

**Movement:**
  * [[Manual winding]] [[manufacture]] movement [[Lange L901.5|L901.5]] (afterwards: [[Lange L121|L121.3]]), 21,600 A/h
  * 54 [[jewels]], 9 of which in gold [[chaton]]s
  * 398 components
  * Power reserve 72 hours

**Case:**
  * [[Platinum]] or 18ct [[yellow gold]] / [[red gold]]
  * Ø 38.5 mm, height 10.4 mm (10.2 mm)
  * Screwed down caseback with six screws and with [[sapphire crystal]]
  * [[Waterproof]] to 30 m

**Dial:**
  * [[Platinum]] [[rhodinated]] (Gold argenté), applied indexes, Roman numerals
  * Or: massive silver
  * Hands in [[red gold]] with [[Superluminova]] coating

**Functions:**
  * [[Hacking seconds]]
  * [[Power reserve indicator]], [[big date]], [[moon phase]]

**Bracelet:**
  * Crocodile leather strap with [[tang-type buckle]] or gold bracelet
</WRAP>

{{tag>Watch_models Watches_with_moon_phase A._Lange_&_Söhne_models A._Lange_&_Söhne_Lange_1_models}}