A Lange Sohne Saxonia Datograph Perpetual Tourbillon Honeygold "Lumen" 740.055FE

The A. Lange & Söhne Saxonia Datograph Perpetual Tourbillon in Honeygold — reference 740.055FE, known as the "Lumen" edition — represents the absolute apex of Saxon watchmaking. Launched from the Glashütte manufacture that A. Lange & Söhne re-established in 1994 after decades of dormancy, the Datograph line has always been considered the crown jewel of the modern Lange catalogue. The Datograph Perpetual Tourbillon takes that legacy further still, combining three of the most demanding horological complications — the flyback chronograph, the perpetual calendar, and the tourbillon — in a single, supremely disciplined case measuring 41mm across.

Honeygold is A. Lange & Söhne's exclusive proprietary gold alloy, developed in-house to achieve a warmly luminous, distinctly honeyed hue that distinguishes it immediately from standard yellow, rose, or white gold. The alloy is formulated to resist tarnishing and scratching more effectively than conventional precious metals, making it as purposeful as it is beautiful. On reference 740.055FE, both the case and the bezel are rendered in Honeygold, creating a unified, monolithic presence on the wrist that is immediately recognizable to the connoisseur.

The "Lumen" designation refers to the black dial treatment, which employs luminous material on the indices to dramatically enhance low-light legibility — a purposeful contrast to the warm gold tones of the case. The result is a dial that is simultaneously functional and arrestingly elegant, with the deep black surface providing a stage on which the sub-dials, perpetual calendar apertures, and chronograph registers are laid out with characteristic Lange clarity and white-space discipline. The leather strap completes a formal yet wearable aesthetic that is entirely consistent with the watch's grand-complication status.

Powering the 740.055FE is a hand-wound movement of exceptional complexity, constructed and finished entirely in Glashütte to the exacting standards that have made A. Lange & Söhne movements reference points in fine watchmaking. Every component is hand-finished with techniques including Glashütte ribbing, anglage by hand, and polished steel screws with blued heads; even the bridges and cocks are individually fitted and adjusted. The tourbillon regulates the escapement, the flyback chronograph can be reset with a single push-piece rather than the conventional two-step operation, and the perpetual calendar correctly accounts for month lengths and leap years without requiring manual correction until 2100.

On the wrist, the 41mm Honeygold case occupies a commanding yet refined footprint. Lange cases are known for their precise, hand-finished transitions between polished and satin-brushed surfaces, and the Honeygold alloy lends those surfaces an additional visual depth. The leather strap keeps the overall package refined and dress-appropriate, ensuring the watch sits elegantly beneath a cuff while remaining fully visible when the wearer chooses to display it.

Bizak & Co. is proud to offer this brand-new A. Lange & Söhne Saxonia Datograph Perpetual Tourbillon 740.055FE for sale online. As a reference of extraordinary rarity and technical achievement, it represents one of the most compelling purchases available in the high-horology market today. We invite serious collectors and first-time Lange buyers alike to contact our team at bizakandco.com for current pricing, provenance documentation, and concierge shipping arrangements — we are here to make acquiring this exceptional watch as seamless as the movement within it.