Skip to content
The Encyclopedia of Horology

Wristwatch · Perpetual calendar tourbillon wristwatch

A. Lange & Söhne Lange 1 Tourbillon Perpetual Calendar Reference 720.032

Partially verified

This A. Lange & Söhne Lange 1 Tourbillon Perpetual Calendar, reference 720.032, is a 42 mm wristwatch crafted from rose gold. It features the signature Lange 1 asymmetrical dial layout, incorporating an outsize date display, time indication, and a moon phase indicator integrated within the seconds sub-dial. The timepiece integrates a perpetual calendar mechanism with a tourbillon, the latter of which is positioned on the movement side rather than the dial side. The watch is presented on a strap and follows the German design standards of the Lange 1 series. According to the source, the piece maintains the visual identity of the collection while housing complex horological complications. The watch is marked as having been manufactured in Germany, reflecting the engineering focus of the brand. Its design prioritizes legibility and a consistent aesthetic across the complications.

Front view of the A. Lange & Söhne Lange 1 Tourbillon Perpetual Calendar, reference 720.032, showing the asymmetrical dial and outsize date.
Front view of the A. Lange & Söhne Lange 1 Tourbillon Perpetual Calendar, reference 720.032, showing the asymmetrical dial and outsize date. — Zamanito. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
zamanito.com
Category
Wristwatch · Perpetual calendar tourbillon wristwatch
Maker / attribution
A. Lange & Söhne
Reference
720.032
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
Not established
Source-reported place
Germany

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

Design and Case Construction

The A. Lange & Söhne reference 720.032 is constructed with a 42 mm rose gold case. The dial layout follows the established asymmetrical configuration of the Lange 1 series, which positions the time display and seconds sub-dial in a non-concentric arrangement. The dial features an outsize date display, a recurring element in this specific model family, placed at the 10 o'clock position.

The peripheral display includes markers for the perpetual calendar. The moon phase indicator is housed within the seconds sub-dial located in the lower portion of the dial. The overall aesthetic maintains the visual language associated with the Lange 1 series while integrating multiple complex functions into the case framework.

Evidence for this section
  • “طراحی این مدل با زیرصفحه‌های نامتقارن برای نمایش ساعت و ثانیه، امضای خاص برند A. Lange & Söhne را به نمایش می‌گذارد”
  • “ویژگی بارز آن نمایشگر تاریخ بزرگ است”

Complications and Movement

The timepiece combines a perpetual calendar with a tourbillon mechanism. The perpetual calendar displays are integrated into the main dial, with month indicators along the perimeter and a moon phase function within the seconds sub-dial. The tourbillon mechanism is not visible from the dial side; it is positioned on the case back, a design choice noted as providing a more discreet technical appearance for the wearer.

The integration of these complications is intended to balance technical density with the visual standards of the Lange 1 line. The source identifies this as an attempt to incorporate maximal complexity into the specific constraints of the brand's primary model design.

Evidence for this section
  • “مجهز به توربیلون پنهان در پشت”
  • “نحوه قرارگیری توربیلون است که به شکلی محتاطانه در پشت ساعت (کیس‌بک) پنهان شده است”
  • “پیچیدگی‌های تقویم دائمی و توربیلون را در خود جای داده است”

Attribution and Documentation

The watch is attributed to the German manufacturer A. Lange & Söhne, specifically identified as part of the Lange 1 collection. The source documentation classifies this as a flagship model and notes its construction within the 42 mm rose gold reference 720.032. The provenance and historical context provided by the source are intended for reference purposes and do not constitute an independent verification of the watch's specific origin or service history.

The information provided serves to categorize the watch within the broader production history of the brand's contemporary series, noting its technical complexity as a hallmark of this reference.

Evidence for this section
  • “برند: A. Lange & Söhne”
  • “مدل پرچمدار Lange 1”
  • “این ساعت به عنوان یک شاهکار در میان محصولات این برند آلمانی شناخته می‌شود”

Open research questions

  • What is the specific movement caliber designation for reference 720.032?
  • Are there distinct variations in the dial color or materials for this specific reference?

Source evidence

Recorded claims and source quotations for A. Lange & Söhne Lange 1 Tourbillon Perpetual Calendar Reference 720.032
FieldSource-reported valueSource quotation
MakerA. Lange & Söhne“A. Lange & Söhne”
Reference720.032“720.032”
MaterialRose gold“طلای رزگلد”
Diameter42 mm“۴۲ میلی‌متر”
ComplicationsPerpetual calendar and tourbillon“پیچیدگی: تقویم دائمی و توربیلون”
Country of manufactureGermany“کشور سازنده: آلمان”

Visible details

  • Asymmetrical dial layout with offset time and seconds
  • Rose gold case construction
  • Outsize date display window at 10 o'clock
  • Moon phase display within the seconds sub-dial

Research qualifications

  • Tourbillon visibility is not verifiable via the provided dial-side photographs
  • Movement serial number not provided in source

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

Consulted source

ساعت مچی A. Lange & Söhne Lange 1 Tourbillon Perpetual Calendar رفرنس 720.032

Reviewed 2026-11-02 · Record 3ae9f13522

Terms in this record

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

Other perpetual calendar tourbillon wristwatch records