About the A. Lange & Söhne Richard Lange Perpetual Calendar Terraluna
The Richard Lange line within A. Lange & Söhne's catalogue is named in honor of Richard Lange, son of founder Ferdinand Adolph Lange, and is dedicated to precision timekeeping instruments with an observatory-influenced aesthetic. The Perpetual Calendar Terraluna extends this philosophy by integrating a perpetual calendar mechanism that correctly accounts for month lengths without manual correction until 2100, alongside an orbital moon-phase complication of extraordinary accuracy. Unlike a conventional moonphase aperture, the Terraluna's lunar display rotates a three-dimensional moon sphere in an orbit corresponding to the actual synodic month, a feat of horological engineering that sets this reference apart from virtually any competing manufacture. Crafted entirely in Glashütte, the watch exemplifies Lange's tradition of hand-finished movements, three-quarter plates, and German silver bridges that have defined the brand since its reestablishment in 1990.
What to Look For
Buyers choosing between the two primary Terraluna references should note that reference 180.026FE is cased in white gold while 180.032FE is cased in pink rose gold, with both sharing the 45.5mm case diameter and argente silver dial that give the watch its characteristic legibility and formal presence. The large case size is intentional, providing the dial real estate necessary to display perpetual calendar indications including date, day, month, and leap year alongside the orbital moon complication without visual compromise. Condition, box-and-papers completeness, and whether the piece is brand new versus pre-owned are the primary value drivers in this reference family, given the watch's limited production and consistent demand among serious Lange collectors.
Frequently Asked Questions
What is the difference between reference 180.026FE and 180.032FE in the Richard Lange Perpetual Calendar Terraluna?
Reference 180.026FE is housed in an 18-karat white gold case while reference 180.032FE is housed in an 18-karat pink rose gold case, and both measure 45.5mm in diameter with an argente silver dial. The choice between the two is largely aesthetic, as the complications, movement architecture, and dial layout are consistent across both references, making case metal the decisive factor for most buyers.
What makes the Terraluna moon-phase display different from a standard moonphase watch?
Rather than using a rotating disc with a printed or engraved moon image visible through an aperture, the Terraluna employs a patented orbital system in which a sphere representing the Moon physically rotates around a central Earth depiction, mimicking the actual astronomical relationship between the two bodies. This mechanism is displayed on the caseback side of the watch and is accurate to one day's deviation over approximately 1,058 years, making it far more precise than conventional moonphase complications.
Are the A. Lange & Söhne Richard Lange Perpetual Calendar Terraluna watches for sale at Bizak and Co. authentic and new?
Yes, both the white gold reference 180.026FE and the pink rose gold reference 180.032FE listed at Bizak and Co. are brand new and have been authenticated prior to listing. Each piece ships with its original documentation, and our team is available to answer provenance or specification questions before you buy.
Buy, trade, or sell. Contact Bizak & Co. for pricing and availability on any reference in this collection.
