Generic Patek Philippe Annual Calendar 4936/4937 Case Back Sapphire Crystal 25.4mm

Product Description

This premium sapphire crystal is designed for the Patek Philippe Annual Calendar 4936/4937 case back, measuring 25.4mm in diameter. This exhibition case back crystal allows a clear view of the beautifully finished movement while providing exceptional scratch resistance and durability. Crafted from high-grade synthetic sapphire, it ensures your timepiece maintains both its functional elegance and visual appeal.

Features & Function

• High-grade synthetic sapphire for exceptional scratch resistance

• Exhibition case back design for clear movement viewing

• Precision fit for 4936/4937 case back opening

• Maintains both functional elegance and visual appeal

Specifications

• Diameter: 25.4 mm

• Material: High-grade synthetic sapphire

• Compatible Models: Patek Philippe Annual Calendar 4936, 4937 (case back)

Applications

• Replacement case back crystal for Patek Philippe 4936 / 4937

• Ideal for restoring movement visibility in exhibition case backs

FAQs

1.Is this an original Patek Philippe part?
No, it is a premium generic replacement crystal, not OEM.

2.Will it fit my 4936 or 4937 case back perfectly?
Only if your case back uses exactly 25.4mm round glass; measure before purchase.

3.Is the quality comparable to original?
It offers similar hardness and clarity but is not manufactured by Patek Philippe.

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