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This generic domed round sapphire crystal is designed for the Patek Philippe Perpetual Calendar 7140, measuring 29.3mm in diameter with a height of 1.7mm and edge thickness of 0.8mm. Its domed design offers excellent optical clarity and scratch resistance for reliable watch glass replacement.
Domed round shape provides classic Perpetual Calendar aesthetics and impact resistance
0.8mm edge thickness offers ultra-thin profile for precise case fitting
High hardness (9 Mohs) resists daily scratches and wear
Generic design – always verify dimensions with original glass
Diameter: 29.3 mm
Height: 1.7 mm
Edge Thickness: 0.8 mm
Shape: Domed Round
Material: Synthetic sapphire
Compatible Model: Patek Philippe Perpetual Calendar 7140
Replacement crystal for Patek Philippe 7140
Suitable for luxury perpetual calendar dress watch restoration
1.Is this an original Patek Philippe part?
No, it is a generic compatible crystal, not OEM.
2.Will it fit my 7140 perfectly?
Only if your watch uses exactly 29.3mm domed round glass; measure before purchase.
3.Is 0.8mm edge thickness durable enough?
Yes, sapphire is very hard; 0.8mm provides adequate strength for normal daily wear.
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Competitive pricing on Seiko/Hattori calibers.
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