A Lange Sohne Grand Lange 1 Moon Phase Yellow Gold 41mm Ivory Argente Dial 139.021

The A. Lange & Söhne Grand Lange 1 Moon Phase in yellow gold, reference 139.021, represents one of the finest expressions of Saxon watchmaking available on the secondary market today. A. Lange & Söhne re-emerged in 1994 after decades of dormancy and immediately redefined what a German luxury watch could be, anchoring its identity to the Lange 1 — a piece whose off-center, asymmetric dial layout and oversized jumping date window became the brand's enduring signature. The Grand Lange 1 Moon Phase elevates that founding vision by adding a precisely engineered moon-phase display to the already compelling Lange 1 proposition.

The 41mm case and bezel are fashioned from 18-karat yellow gold, a warm and traditional choice that suits the watch's heritage character perfectly. Yellow gold lends the Grand Lange 1 Moon Phase a classical gravitas rarely found in contemporary watchmaking, and its substantial 41mm diameter ensures strong wrist presence without sacrificing the dressy proportions expected of a complication watch at this tier. Every surface of the case reflects Lange's meticulous hand-finishing, with polished flanks meeting brushed lugs in a study of disciplined contrasts.

The ivory argenté dial of reference 139.021 is among the watch's most celebrated attributes. The soft, warm off-white ground is populated by a blend of Roman numerals and applied index markers, creating a dial language that feels both antique and rigorously refined. Lange's famous outsize date — a paired double aperture occupying the upper-right quadrant — remains immediately legible, while the moon-phase disc, rendered with Lange's characteristic astronomical precision, occupies its own dedicated sub-dial. The overall composition demonstrates how purposeful asymmetry can achieve greater harmony than conventional symmetry.

Powering the watch is a mechanical movement engineered and finished entirely in Glashütte, Germany, in accordance with A. Lange & Söhne's exacting manufacture standards. Lange movements are renowned for their three-quarter German silver plates, Glashütte ribbing (Glashütte stripes), hand-engraved balance cocks, and individually polished screws — details that transform the movement into a work of art visible through the exhibition caseback. This dedication to hand-finishing means that each component is touched by a master watchmaker before the piece ever leaves the manufactory.

Worn on a hand-stitched leather strap, the Grand Lange 1 Moon Phase 139.021 sits with authority on the wrist while remaining light enough for extended wear at important occasions. It is ideally suited to the discerning collector who appreciates horological history, German precision, and the lasting value of 18-karat yellow gold. Whether purchased as a centerpiece addition to an existing collection or as a singular statement timepiece, this reference has consistently demonstrated enduring desirability among serious watch enthusiasts worldwide.

At Bizak & Co., we specialize in sourcing and presenting exactly this caliber of rare and collectible fine watchmaking. Reference 139.021 is available for purchase online at bizakandco.com, and our team of luxury watch specialists is on hand to answer every question about provenance, condition, and transaction logistics. We invite you to contact us directly to secure this exceptional A. Lange & Söhne Grand Lange 1 Moon Phase and experience the Bizak standard of service.