A. Lange & Söhne
Langematik Perpetual
Ref. 310.025 E
2001–2021 · 38.5mm · caliber A. Lange & Söhne Cal. L922.1 Sax-0-Mat: in-house automatic, 21,600bph, 46h PR; ZERO-RESET seconds, 5.7mm movement height, perpetual calendar with outsize date and a moon phase accurate to one day in 122.6 years
Live pricing is coming soon. Get notified when it is available for this reference.
Movement tier: unclassified
Versatile size: fits most wrists (6–7.5 in / 15–19 cm)
38.5 mm case. The sweet spot for the broadest range of wrist sizes. Neither too dainty nor too bold.
Not yet rated
Community + OSINT signals haven’t landed for this reference yet. We don’t publish a rating against zero signal: the number would mean nothing. Editorial body + caliber + market value still surface above; ratings appear once the signal corpus does.
Search pre-owned listings
Authentication
A discontinued platinum perpetual calendar is bought on condition and completeness rather than on the risk of a fake, and the outsize date is the part that most rewards a close look.
Known issues in the market
- The main corrector at 10 o'clock advances every calendar display together. Using the individual correctors out of sequence, or correcting during the midnight changeover, is how these get damaged.
- Platinum shows handling marks readily and polishes away quickly. A case with soft, rounded edges has lost material that cannot be put back.
- Completeness matters disproportionately here: the correcting stylus, the box and the certificate are frequently missing on a watch that has changed hands several times.
| Area | What to check | What is correct | Red flag |
|---|---|---|---|
| dial | Outsize date alignment | Both date discs sit level with each other and centred in the frame, changing together and instantaneously | Discs at different heights, a numeral clipped by the frame, or a date that crawls over several minutes |
| case | Case edge definition in platinum | Crisp transitions between polished and brushed surfaces, with lug edges still sharp | Softened or wavering edges and a uniformly bright case, both signs of repeated polishing |
| movement | Caliber L922.1 Sax-0-Mat and ZERO-RESET | Pulling the crown resets the seconds to zero instantly; the movement is finished with Glashütte ribbing and a hand-engraved balance cock | Seconds that free-run with the crown out, or an engraved balance cock whose cut looks stamped and uniform |
| dial | Calendar and moon phase coherence | Day, date, month, leap-year and moon phase all agree with each other and with the real date | Indications that cannot be reconciled by setting, which points to a calendar mechanism out of phase |
Common legitimate replacements
- Straps and buckles are routinely replaced. Confirm whether the deployant is the original Lange part, since it carries real value on a platinum watch.
- Crystals are replaced after impact; a correct Lange sapphire sits flush with no visible bevel difference.
Expert resources: A. Lange & Söhne service can confirm the movement number against the case. Because the reference was discontinued, an independent Lange specialist is often the faster route for a condition report.
You might also like
Buying guidance
Sources for this entry: alange-soehne.com · watchesbysjx.com
Pre-purchase sheet → The numbers to check, what to look at and what to ask, on one printable page.