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Movement tier: unclassified · caliber Glashütte Original Cal. 91-02: in-house automatic, 28,800bph, 50h PR; open-worked dial-side movement; panorama date from dial side; intricate skeletonized architecture · 50h power reserve (2.1 days)
Medium-large: suits wrists 6.5 in+ (16.5 cm+)
42 mm case. Wears confidently on average to larger wrists. May overhang on slender builds.

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Authentication

Open-worked bridges must show Glashütte stripes; any unstriated bridge is a replacement or fake. Panorama rotor present through caseback.

Known issues in the market
  • Bridge without Glashütte ribbing is a replacement or non-genuine component; stripes are applied during manufacture.
  • Panorama rotor absence through caseback indicates movement swap.
AreaWhat to checkWhat is correctRed flag
movementGlashütte stripes on exposed bridgesGlashütte ribbing (stripes) on all visible bridges under magnification; consistent and evenly spacedUnstriated bridge; replacement component; non-genuine movement part
casebackPanorama skeletal rotorThin skeletal Panorama rotor visible through caseback; Cal. 91-02 designationSolid rotor; no Panorama rotor; movement swap
dialInverse layout with open-worked bridgesMain sub-dial at left; date at 11; open-worked bridges exposing movement; consistent with 91-02 architectureConventional layout; wrong sub-dial position; non-genuine dial
Common legitimate replacements
  • Leather strap; Glashütte Original OEM alligator preferred.
  • Crystal; sapphire standard.
Expert resources: Glashütte Original PanoMaticInverse press materials. Cal. 91-02 documentation.

Authentication guide

Last reviewed June 2026

The PanoMaticInverse shows the movement from the dial side rather than through the caseback. Cal. 91-02 is partially skeletonized and the movement architecture is visible directly through the dial opening. The panorama date mechanism is visible from the front. Any example where the movement is not visible from the dial side is not the Inverse.

Known reproduction risks

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MEDIUM

The PanoMaticInverse is difficult to replicate convincingly because the movement must be visible from the dial side and meet GO finishing standards from both directions.

  • Solid dial on a stated Inverse -- the movement should be visible from the front
  • Movement visible from dial side that does not show Glashütte ribbing quality
  • Date mechanism not at the upper right position from the dial-side view
  • Movement layout inconsistent with known Cal. 91-02 architecture from either viewing direction

Dial variants by era

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EraDescriptionIdentifiers
2014 to presentCurrent production PanoMaticInverse in steel or rose gold, 42mm. The open-worked dial-side exposes the movement; silver or black partial dial surrounds.
  • Movement visible from the dial side through dial openings -- bridges, wheels, and the panorama date mechanism are all visible
  • Panorama date window at the upper right (12-to-1 o'clock zone) showing from the dial side
  • Small seconds sub-dial visible in the lower movement architecture
  • "PanoMaticInverse" text on the partial dial surround
  • "Glashütte Original" text in the correct typeface
  • No solid dial covering the movement -- any solid dial is not the Inverse

Service part flags

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Dial-side movement visibility

Original: Cal. 91-02 is specifically constructed to show the movement from the dial side. The bridges, wheels, and date mechanism are all visible through the open dial. This is the primary product identity check: if the movement is not visible from the front, it is not the Inverse.

Replacement tells
  • Solid dial covering the movement on a stated PanoMaticInverse -- immediate disqualifier
  • Movement visible from the dial side with a layout inconsistent with Cal. 91-02 architecture
  • Panorama date mechanism not visible from the dial side
Caseback

Original: The caseback of the PanoMaticInverse provides a secondary view of the movement from the back. Both dial-side and caseback views should show consistent movement finishing.

Replacement tells
  • Movement finishing on the caseback view inconsistent with the dial-side view (different components visible)
  • Glashütte ribbing absent from movement bridges visible from caseback
  • Movement layout inconsistent through caseback relative to known Cal. 91-02 architecture
Panorama date from dial side

Original: The panorama date mechanism is visible from the dial side on the Inverse. The two stacked discs and their advance mechanism can be observed directly. Both discs should jump simultaneously at midnight.

Replacement tells
  • Date mechanism not visible from the dial side
  • Date that advances in multiple steps rather than jumping simultaneously
  • Disc alignment with vertical offset at the aperture

Case back markings

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2014 to present
  • Exhibition caseback displaying Cal. 91-02 from the back side
  • Glashütte ribbing visible on the movement bridges from the caseback view
  • "Glashütte Original" and "Made in Germany" on the movement
  • Reference and serial number on the case band
  • Steel or gold hallmark per case material

Movement tells

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  • Cal. 91-02 is a skeletonized architecture specifically designed for the Inverse. The movement can be inspected from both dial and caseback sides. Any inconsistency between the two views indicates a non-original movement.
  • Glashütte ribbing on all visible bridge surfaces is the finishing tell consistent across all GO calibers.
  • Power reserve is approximately 50 hours. A PanoMaticInverse stopping before 40 hours when fully wound warrants service.
  • The dial-side display of the movement means that any dust or debris that enters the case is visible immediately without opening the watch. The interior should be clean on a well-maintained example.
Sources: Glashütte Original -- PanoMaticInverse caliber documentation; Hodinkee -- PanoMaticInverse movement architecture review.

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