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This is a generic sapphire crystal designed for the Patek Philippe Twenty-4 Automatic 7300 series, measuring 28.9mm in diameter, 2.3mm in height, and 1.4mm in thickness. Featuring a domed round profile, this aftermarket replacement crystal is made from synthetic sapphire, offering exceptional scratch resistance (Mohs hardness 9) and excellent optical clarity.
The original Twenty-4 7300 features a 36mm case, 30m water resistance, and is powered by the automatic Caliber 324 S C movement with a 35-45 hour power reserve .
Sapphire Crystal – Mohs 9, highly scratch-resistant and optically clear.
Domed Round Profile – Classic curved appearance, matching the elegant style of the Twenty-4 series.
Precise Dimensions – 28.9mm diameter, 2.3mm height, 1.4mm thickness – exact fit for the 36mm case.
Generic Aftermarket – Non-original but manufactured to OEM specs for direct replacement.
Cost-Effective – Affordable alternative for repair or restoration.
| Parameter | Details |
|---|---|
| Compatible Model | Patek Philippe Twenty-4 Automatic 7300 series (36mm case) |
| Type | Generic aftermarket |
| Material | Synthetic sapphire |
| Shape | Domed round |
| Diameter | 28.9 mm |
| Height | 2.3 mm |
| Thickness | 1.4 mm |
Patek Philippe Twenty-4 Automatic 7300 series (e.g., 7300/1200A, 7300/1200R)
Other Twenty-4 models using the same 28.9mm domed crystal (verify original size)
Replacement of damaged, deeply scratched, or aged original crystals
1. Is this a genuine Patek Philippe crystal?
No. It is a generic aftermarket replacement, not original, but matches the 7300 dimensions.
2. Will the original 30m water resistance be maintained after installation?
Proper installation with a new gasket can restore everyday splash resistance (30m). A water resistance test is advised. (Gasket not included)
3. What should I pay attention to during installation?
Use a new gasket and UV adhesive, press evenly with a crystal press, dome outward. Professional installation is recommended.
4. Does this crystal fit other Twenty-4 models like 4907?
Different references may have different crystal sizes. Measure your original diameter (28.9mm) to confirm.
5. Is a gasket included?
Usually not. The sealing gasket must be purchased separately. Confirm with the seller.
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Competitive pricing on Seiko/Hattori calibers.
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