The top pick for most buyers is a hand-wound perpetual calendar replica in the Lange house style, with a jeweled and decorated movement, an instant-jump date and day, and a moonphase that advances on a realistic lunar cycle. Everything else in this guide hangs off five criteria: whether the calendar changes by mechanism or by printing, how the moonphase is driven, the quality of case and dial finishing at arm's length, the movement type and whether it can be serviced, and how honestly the seller describes the piece.

Is there a Lange 2 Perpetual at all?

A. Lange & Söhne organizes its catalog into families such as Lange 1, Saxonia, Richard Lange, Langematik, and Odysseus. There is no collection called Lange 2. When a listing advertises a replica Lange 2 perpetual, it usually means a perpetual calendar built to look like the Saxon school: an outsize date, an off-center main dial, and a moonphase set into the layout. Treat the name as a description of a look rather than a reference number, and compare the listing photos against genuine perpetual calendar references before you judge anything else.

Top pick: hand-wound perpetual with instant-jump indications

This is the build that behaves most like the watch it imitates. The calendar displays snap forward in one step at midnight instead of creeping, and the movement is visible through a display back with at least some finishing on the bridges and rotor-free gear train.

Pros

  • Instant-jump date and day read like a real complication rather than a date wheel with a sticker.
  • Hand-wound movements are usually thinner, so the case profile stays close to the original proportions.
  • No rotor means fewer parts to fail and a cleaner view of the calendar module.

Cons

  • You must wind it, and a perpetual calendar module adds drag to the mainspring.
  • Costs more than quartz or basic automatic replicas.
  • Servicing is harder to arrange, since few local watchmakers will touch a clone calendar module.

Buy it if: you wear the watch often, you care about how the date flips at midnight, and you accept that a calendar module needs careful handling and occasional service.

Automatic perpetual with a modular calendar

Here the base movement is automatic and the calendar sits on top as a separate module. It is the middle of the market and the most common configuration in replica perpetual listings.

Pros

  • No winding routine, which suits people who rotate several watches.
  • Widely available in multiple dial colors and case sizes.
  • Base movements are common, so a watchmaker can often work on the timekeeping side.

Cons

  • Modules add height, so the case often sits thicker than the original.
  • Some examples creep through the date change over several hours instead of snapping.
  • Leap-year handling is frequently simplified or absent, so the calendar drifts every four years.

Buy it if: you want the look with daily convenience and you can verify the date change on video before paying.

Quartz perpetual calendar replica

The cheapest route. A quartz module drives the hands, and the calendar is often a stack of printed discs rather than a mechanical program.

Pros

  • Accurate timekeeping and almost no maintenance.
  • Light, thin, and inexpensive enough to treat as a beater.
  • Good for testing whether you like the dial layout before spending more.

Cons

  • The ticking second hand is a giveaway at close range.
  • Subdials and moonphase are usually decorative and do not track anything.
  • Case finishing is generally the weakest part of the build.

Buy it if: the watch is for casual wear, photos, or a first try at the style, and you have no expectations about the complication.

How to check the calendar mechanism

Ask for a video of the date change at midnight, filmed in one continuous clip. Watch whether the day, date, and month all move within a few minutes or crawl across an hour. Then ask how the watch handles February 28 in a leap year. A true perpetual calendar follows the Gregorian rule and needs no correction until 2100. Most replicas in this price band do not, and a seller who says so plainly is more trustworthy than one who promises otherwise.

How to check the moonphase and dial

A moonphase disc should advance roughly once every 29.5 days. On cheap builds the aperture is often tied to the 24-hour wheel or to the date wheel, which makes the moon jump daily or monthly. Ask for a photo of the moonphase on two dates a week apart. On the dial itself, look for applied markers with real depth, sharp printing on the subdials, and consistent spacing between the outsize date numerals. Crooked date alignment is the fastest way to spot a low-grade build in person.

How to check the case, crystal, and finishing

Look at the case flanks in raking light. Sharp lugs, even brushing, and a polished bevel that runs unbroken from lug to lug suggest a better case. Check that the sapphire crystal sits flush and that any anti-reflective coating is faint rather than a blue haze. Confirm the stated water resistance with the seller and do not assume a dress watch with a calendar module is safe for swimming.

Red flags and questions to ask

  • Stock photos instead of images of the actual piece.
  • Claims of a genuine Swiss movement at a price that cannot support one.
  • No answer when you ask about the date-change speed or leap-year behavior.
  • Pressure to pay outside a protected method.
  • No stated return window, given that calendar faults often appear after a week of wear.

Ask three questions before buying: does the date jump instantly at midnight, how long is the return window, and can the seller send a video of the moonphase and date change on the actual watch. Clear answers on all three matter more than any claim about grade.