A. Lange & Söhne Reference 310.221E Sax-O-Mat Langematik Perpetual | A yellow gold perpetual calendar wristwatch with moon phases, zero-reset mechanism and bracelet, Circa 2005 | 朗格 型號 310.221E Sax-O-Mat Langematik Perpetual 黃金萬年曆鍊帶腕錶備月相顯示及歸零機制，製作年份約...

A. Lange & Söhne

Reference 310.221E Sax-O-Mat Langematik Perpetual
A yellow gold perpetual calendar wristwatch with moon phases, zero-reset mechanism and bracelet, Circa 2005

朗格 型號 310.221E Sax-O-Mat Langematik Perpetual
黃金萬年曆鍊帶腕錶備月相顯示及歸零機制，製作年份約 2005

Dial: silvered
Caliber: cal. L922.1 automatic, 43 jewels
Movement number: 53'410
Case: 18k yellow gold, sapphire crystal display back secured by six screws
Case number: 163'304
Closure: 18k yellow gold A. Lange & Söhne bracelet with double folding clasp
Size: 38.5 mm diameter, bracelet circumference is approximately 180 mm
Signed: case, dial and movement
Box: no
Papers: no

Condition Report:
Case: The case in very good overall condition with light surface wear throughout. The bezel with some faint surface scuffing. The bracelet with visible surface scuffing consistent with previous use. The double folding clasp is in 18k white gold and is marked Germany, and with Wellendorff bracelet mark.

Dial: The dial is in overall excellent condition. A very small dot visible under 1 o'clock visible under a loupe.

Movement: The movement is running at time of cataloging, however it was not tested for the accuracy of time or duration of the power reserve and may need service at the buyer's discretion. Please note that Sotheby's does not guarantee the future working of the movement.

Catalogue Note:
The revolutionary Sax-O-Mat movement features a zero-reset seconds hand, which creates a more accurate timepiece. While this was initially used only for the seconds hand in previous models, the Langematik Perpetual employs this function by having a main pusher which can control all of the functions, including the calendar and moon phases, at once.