Master Calendar Meteorite Dial 39mm | Ref. Q1558421 | 2017 Mint Full Set (JLC Serviced)

The Story

The Jaeger-LeCoultre Master Calendar occupies an iconic chapter in the heritage of the "Watchmaker of Watchmakers," lineage tracing back to the triple calendar timepieces created by the maison in the 1940s. Reference Q1558421 elevates that classic complication into the cosmos by utilizing an authentic slice of the historic Muonionalusta meteorite. Originating from the asteroid belt between Mars and Jupiter and estimated to be over 4 billion years old, the meteorite survived entry into Earth's atmosphere over 800,000 years ago. Because the natural Widmanstätten crystalline structures formed over millions of years of space cooling, every single dial is completely unique—making this reference a true 1-of-1 piece of horological art.

The Craft: Celestial Metallurgy & The Manufacture Calibre 866

The 39mm stainless steel case showcases Master Control proportions, featuring alternating satin-brushed case flanks and mirror-polished bezels and step lugs with an ultra-comfortable thickness of just 10.6mm.

The meteorite dial is a visual marvel. Its metallic grey crystalline surface catches light from every angle, punctuated by applied faceted hour markers, Dauphine hands, and a bright blue crescent-tipped central date pointer hand. Twin day and month apertures sit symmetrically below the 12 o'clock marker, balanced by a running sub-seconds sub-dial featuring a deep blue moonphase display at 6 o'clock.

Turn the watch over to admire the mechanical mastery through the sapphire exhibition caseback: the In-house JLC Calibre 866. This self-winding automatic movement consists of 305 hand-finished components, operating at 28,800 vph with a 43-hour power reserve. The movement is finished with fine Cotes de Genève waves, hand-beveled bridges, and a heavy rose gold-accented winding rotor, subjected to JLC's rigorous "1000 Hours Control" testing protocol.

Condition, Service History & Presentation Package

This collector-grade Meteorite Master Calendar is presented in true Mint condition, exhibiting crisp case flanks, immaculate sapphire crystals, and a spotless dial. The watch underwent an official, documented Jaeger-LeCoultre factory overhaul in 2020, ensuring peak mechanical performance and amplitude stability.

The timepiece arrives as a True Complete 2017 Full Set, complete with its original JLC presentation box, manuals, international warranty card, and official 2020 JLC service documentation. (Please note: The small external calendar-setting pusher tool is omitted; the calendar functions are easily adjustable with standard soft setting pins, and the watch has been priced exceptionally well to reflect this). Fully inspected and verified by our watchmakers, this celestial 1-of-1 grail is backed by our 1-year Honeyrock mechanical warranty.