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Movement tier: unclassified
Small case: suits slender wrists (under 6.5 in / 16.5 cm)
36 mm case. A compact, elegant wear. Particularly at home on narrower wrists where larger cases can overhang.
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Authentication
The stepped cushion case is entirely GP-specific; sharp step definition is the first authentication check.
Known issues in the market
- The stepped bezel on the Vintage 1945 must have sharp transitions between the upper and lower step; polishing rounds these steps and destroys the design intent.
- No other GP line shares this cushion case profile; a Vintage 1945 case shape on a different movement is not possible in legitimate production.
| Area | What to check | What is correct | Red flag |
|---|---|---|---|
| case | Cushion case stepped bezel definition | Sharp right-angle step between upper and lower bezel levels; no rounding at the step transition | Rounded or blended step; soft transition from upper to lower bezel indicates polishing or replica production |
| case | Cushion corner rounding | Consistent rounded corners on all four sides of the cushion; symmetrical from any angle | Asymmetrical corner rounding; any corner that is sharper or more rounded than the others |
| movement | Cal. GP03300-0100 via caseback | Exhibition caseback showing in-house GP movement with full decoration | Non-GP movement; any caliber other than GP03300-0100 or its variants |
Common legitimate replacements
- Stepped bezel polishing is irreversible; step definition loss significantly reduces collector value.
- Leather straps are frequently replaced; factory GP straps for the 1945 have a specific taper and signed buckle.
Expert resources: Girard-Perregaux Vintage 1945 documentation at girard-perregaux.com. WatchUSeek GP subforum for stepped bezel condition references.
Authentication guide
Last reviewed June 2026
The Vintage 1945 uses a distinctive rectangular cushion case derived from the original 1945 design. The movement is specifically shaped to fit the case architecture, which is the most reliable authenticity check -- no generic movement fits a genuine 1945 case.
Sources: Girard-Perregaux -- Vintage 1945 history and specifications; Revolution -- GP rectangular case reference documentation.





