Short Answer

A replica Saxonia Automatic is a third-party copy of the A. Lange & Söhne Saxonia Automatic, the ref. 380 line with a 38.5 mm case, a solid silver dial, applied gold baton markers and a small seconds subdial at 6 o'clock. Replicas copy the case shape, the dial layout and the wrist presence. None of them copy the L086.1 micro-rotor movement, the hand-engraved balance cock or the German silver three-quarter plate. If you want the look at a fraction of the price, a replica can deliver that. If you want the movement, no replica delivers it.

What the Genuine Watch Uses

  • Case: 38.5 mm in pink gold, white gold or platinum, about 9.8 mm thick.
  • Dial: argenté solid silver, printed minute track, faceted gold hands.
  • Movement: L086.1 automatic, platinum micro-rotor, 72-hour power reserve, 21,600 vph.
  • Finishing: hand-engraved balance cock, Glashütte ribbing, blued screws, gold chatons.

Those four lines set your baseline. Compare any replica against them before you pay.

Prerequisites

  • Know your wrist size and the case size you can wear.
  • Set your budget tier before you contact a seller.
  • Have a loupe or a phone macro lens ready for photos.

How to Inspect One, Step by Step

  1. Ask the seller for the exact case diameter, thickness and lug width, then compare those numbers with the specs above.
  2. Request a macro shot of the dial and check the brand printing for thin, even strokes with clean edges.
  3. Confirm the subdial sits at 6 o'clock and the seconds hand sweeps in a smooth arc instead of ticking once per second.
  4. Turn the watch over and study the rotor. A micro-rotor sits flush inside the movement bridge; a full rotor that sweeps across the whole caseback is a giveaway.
  5. Read the engraving on the balance cock. Hand engraving has depth and slight variation; machine stamping looks flat and repeats.
  6. Check the crystal profile. A domed sapphire with a soft inner curve matches the original better than a flat slab.
  7. Wind the crown and set the time. Gritty action or a loose stem points to a low-grade movement.
  8. Weigh the watch in your hand. A 38.5 mm gold piece feels heavier than a plated steel copy, so treat weight as one signal among several.
  9. Ask which movement is inside and whether parts are available. A Miyota 9015 or an ETA clone can be regulated and serviced; no-name movements often cannot.

Movement Tiers You Will See

  • Budget tier: quartz or basic automatic, thick case, printed dial, mineral glass.
  • Mid tier: Miyota 9015 or Seagull ST automatic, sapphire crystal, cleaner dial print.
  • Top replica tier: decorated automatic with a fake micro-rotor plate, closer case profile, applied markers.

Every tier stops at the movement. No replica has a platinum micro-rotor or a 72-hour reserve built to a Lange design.

Red Flags

  • Photos that avoid the caseback.
  • Claims of a "1:1 Swiss made Lange movement".
  • A listed case size of 42 mm or more.
  • No return window and no payment protection.

Care and Ownership

Keep a replica Saxonia Automatic away from water, even when a seller claims 50 m of resistance. Wipe the case with a soft cloth after wear, store it on a cushion and have the gasket checked every two years. Budget for a service or a movement swap if the watch starts losing more than 20 seconds a day.