Skip to content
The Encyclopedia of Horology

Wristwatch · Pink gold manual wind wristwatch with moon phase and date

A. Lange & Söhne Lange 1 Moon Phase Ref. 109.032 Wristwatch

Partially verified

This A. Lange & Söhne Lange 1 Moon Phase, reference 109.032 dating to circa 2007, features a 38.5 mm 18k pink gold case with a transparent sapphire case back. The silvered dial exhibits the brand's asymmetrical layout with applied Roman numerals, an outsize date aperture at 2 o'clock, an 'AUF/AB' power reserve indicator, and a subsidiary seconds dial incorporating a moon phase display at 5 o'clock. The watch is powered by the manual-wind calibre L901.5 and is fitted to a black leather strap secured by an 18k pink gold pin buckle.

Dial and front view of the A. Lange & Söhne Lange 1 Moon Phase ref. 109.032 in pink gold on a leather strap
Dial and front view of the A. Lange & Söhne Lange 1 Moon Phase ref. 109.032 in pink gold on a leather strap — Bonhams. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
www.bonhams.com
Category
Wristwatch · Pink gold manual wind wristwatch with moon phase and date
Maker / attribution
A. Lange & Söhne
Reference
109.032
Catalogue / lot identifier
900
Source-reported date
Circa 2007
Country
Germany
Source-reported serial
161775

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Case and External Features

This A. Lange & Söhne Lange 1 Moon Phase, reference 109.032, is housed in a 38.5 mm 18k pink gold case. The watch features a transparent case back.

The timepiece is fitted with a strap described as 'maker's endangered species' and is secured by a signed 18k pink gold pin buckle.

Evidence for this section
  • “Case: 38.5mm, 18k pink gold, transparent case back, signed”
  • “REF.109.032”
  • “Strap: Maker's endangered species, 18k pink gold buckle, signed”

Dial and Complications

The watch features a silvered dial with an asymmetrical layout. It includes applied Roman numerals and luminous alpha hands.

Complications include an outsize date display at 2 o'clock, a power reserve indicator at 3 o'clock, and a subsidiary seconds sub-dial at 5 o'clock that incorporates a moon phase display.

Evidence for this section
  • “Dial: Silvered, signed”
  • “asymmetrical layout, showcasing applied Roman numerals, luminous alpha hands, and the signature outsize date at 2 o'clock”
  • “power reserve indicator at 3 o'clock and a small seconds sub-dial with an integrated moon phase at 5 o'clock”

Movement and Provenance

The watch is powered by the manual-winding Calibre L901.5. The movement is signed and visible through the case back, featuring hand-engraved balance cocks and Glashütte ribbing.

The watch is dated to circa 2007 in the provided documentation.

Evidence for this section
  • “Calibre: L901.5, manual winding, signed”
  • “CIRCA 2007”
  • “movement is exquisitely finished, and visible through the sapphire case back, including hand-engraved balance cocks and Glashütte ribbing”

Open research questions

  • Is the movement serial number 161775 consistent with production records for the 109.032 reference from 2007?
  • Does the 'maker's endangered species' strap description refer to original manufacturer equipment or subsequent replacement?
  • What are the technical specifications regarding the precision of the integrated moon phase display compared to standard versions?

Source evidence

Recorded claims and source quotations for A. Lange & Söhne Lange 1 Moon Phase Ref. 109.032 Wristwatch
FieldSource-reported valueSource quotation
Reference109.032“REF.109.032”
Case Number161775“Case No: 161775”
CalibreL901.5“Calibre: L901.5, manual winding, signed”
Case Diameter and Material38.5mm, 18k pink gold“Case: 38.5mm, 18k pink gold, transparent case back, signed”
AccompanimentsPresentation box, certificate, instruction manual and setting pin“Accompaniments: Maker's presentation box, certificate, instruction manual and setting pin”
AccompanimentsMaker's presentation box, certificate, instruction manual and setting pin“Accompaniments: Maker's presentation box, certificate, instruction manual and setting pin”

Visible details

  • Off-center main time dial with Roman numerals at III, VI, IX, and XII
  • Double-aperture outsize date display showing '18'
  • Blue moon phase disc integrated within the subsidiary seconds register
  • Fitted with a black alligator-patterned leather strap

Research qualifications

  • The case back and movement are not visible in the primary image
  • Movement condition and operational state are not independently verified

Photograph identity and source facts were screened before import; rights clearance remains pending.

Terms in this record

Glossary explanations for terms named in this object’s record.