---
description: Sapphire crystal replacement for Patek Philippe Ellipse ref. 3987. 27.05×21.9×0.8mm, Mohs 9 hardness, anti-reflective coating, precision fit.
title: Generic Patek Philippe Ellipse 3987 Sapphire Crystal 27.05mm - Sofly
image: https://www.soflypart.com/wp-content/uploads/2022/03/DSC08768.jpg
---
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- **Generic Patek Philippe Ellipse 3987 Sapphire Crystal 27.05mm**
[](https://www.soflypart.com/wp-content/uploads/2022/03/DSC08768.jpg)
# Generic Patek Philippe Ellipse 3987 Sapphire Crystal 27.05mm
$50.00
You Saved
| Brand | Choose an option Patek Philippe- 
Clear |
| --- | --- |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $50.00 |
| 3 - 4 | 5% | $47.50 |
| 5 - 9 | 7% | $46.50 |
| 10 - 14 | 10% | $45.00 |
| 15+ | 15% | $42.50 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $50.00 |
| 3 - 4 | 5% | $47.50 |
| 5 - 9 | 7% | $46.50 |
| 10 - 14 | 10% | $45.00 |
| 15+ | 15% | $42.50 |
Generic Patek Philippe Ellipse 3987 Sapphire Crystal 27.05mm quantity
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## Product Description
**Flat Ellipse sapphire crystal designed for Patek Philippe Ellipse ref. 3987**, precisely engineered at **27.05 × 21.9 × 0.8 mm**. Crafted from premium synthetic sapphire with double-sided anti-reflective coating for **exceptional clarity and scratch resistance**.
## Features & Function
- **Premium synthetic sapphire** — Mohs hardness 9, ultra-durable and scratch-resistant
- **Double-sided anti-reflective coating** — minimizes glare for optimal dial visibility
- **Precision-cut Flat Ellipse profile** — exact match to Patek Philippe 3987 case geometry
- **0.8 mm ultra-thin design** — lightweight, flush fit without bulk
- **Crystal-clear transparency** — maintains authentic Patek Philippe aesthetic and legibility
## Specifications
| Parameter | Value |
| --- | --- |
| **Shape** | Flat Ellipse |
| **Dimensions** | 27.05 × 21.9 × 0.8 mm |
| **Material** | Synthetic Sapphire Crystal |
| **Hardness** | Mohs 9 |
| **Coating** | Double-sided AR (Anti-Reflective) |
| **Compatibility** | Patek Philippe Ellipse ref. 3987 |
## Applications
- Direct replacement for damaged or worn-out original Patek Philippe Ellipse 3987 crystal
- Professional watch repair and restoration
- Watchmaker and collector spare parts supply
- Restoration of vintage Patek Philippe timepieces
## FAQ
**Q1: Is this sapphire crystal 100% authentic Patek Philippe?**
A: This is an **aftermarket replacement crystal** specifically designed to fit the Ellipse 3987. It is not manufactured by Patek Philippe S.A.
**Q2: How do I ensure this crystal fits my watch?**
A: Please confirm your watch model is **Patek Philippe Ellipse ref. 3987**. Dimensions 27.05 × 21.9 mm are precisely calibrated for this reference.
**Q3: Is installation difficult?**
A: We recommend **professional watchmaker installation** to ensure proper seal, alignment, and waterproofing integrity.
## Why Choose SOFLY Watch Parts?
- Fast worldwide shipping within 3 business days.
- Competitive pricing on Seiko/Hattori calibers.
- 3,000+ watch movements and parts in stock.
- Trusted by watchmakers worldwide.
- Personalized sourcing support via **info@soflypart.com** or WhatsApp **+86 18620212114**.
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Crafted from premium synthetic sapphire with double-sided anti-reflective coating for\u00a0exceptional clarity and scratch resistance. Features & Function Premium synthetic sapphire\u00a0\u2014 Mohs hardness 9, ultra-durable and scratch-resistant Double-sided anti-reflective coating\u00a0\u2014 minimizes glare for optimal dial visibility Precision-cut Flat Ellipse profile\u00a0\u2014 exact match to Patek Philippe 3987 case geometry 0.8 mm ultra-thin design\u00a0\u2014 lightweight, flush fit without bulk Crystal-clear transparency\u00a0\u2014 maintains authentic Patek Philippe aesthetic and legibility Specifications Parameter Value Shape Flat Ellipse Dimensions 27.05 \u00d7 21.9 \u00d7 0.8 mm Material Synthetic Sapphire Crystal Hardness Mohs 9 Coating Double-sided AR (Anti-Reflective) Compatibility Patek Philippe Ellipse ref. 3987 Applications Direct replacement for damaged or worn-out original Patek Philippe Ellipse 3987 crystal Professional watch repair and restoration Watchmaker and collector spare parts supply Restoration of vintage Patek Philippe timepieces FAQ Q1: Is this sapphire crystal 100% authentic Patek Philippe? 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Features & Function Premium synthetic sapphire\u00a0\u2014 Mohs hardness 9, ultra-durable and scratch-resistant Double-sided anti-reflective coating\u00a0\u2014 minimizes glare for optimal dial visibility Precision-cut Flat Ellipse profile\u00a0\u2014 exact match to Patek Philippe 3987 case geometry 0.8 mm ultra-thin design\u00a0\u2014 lightweight, flush fit without bulk Crystal-clear transparency\u00a0\u2014 maintains authentic Patek Philippe aesthetic and legibility Specifications Parameter Value Shape Flat Ellipse Dimensions 27.05 \u00d7 21.9 \u00d7 0.8 mm Material Synthetic Sapphire Crystal Hardness Mohs 9 Coating Double-sided AR (Anti-Reflective) Compatibility Patek Philippe Ellipse ref. 3987 Applications Direct replacement for damaged or worn-out original Patek Philippe Ellipse 3987 crystal Professional watch repair and restoration Watchmaker and collector spare parts supply Restoration of vintage Patek Philippe timepieces FAQ Q1: Is this sapphire crystal 100% authentic Patek Philippe? A: This is an\u00a0aftermarket replacement crystal\u00a0specifically designed to fit the Ellipse 3987. It is not manufactured by Patek Philippe S.A. Q2: How do I ensure this crystal fits my watch? A: Please confirm your watch model is\u00a0Patek Philippe Ellipse ref. 3987. Dimensions 27.05 \u00d7 21.9 mm are precisely calibrated for this reference. Q3: Is installation difficult? A: We recommend\u00a0professional watchmaker installation\u00a0to ensure proper seal, alignment, and waterproofing integrity. Why Choose SOFLY Watch Parts? Fast worldwide shipping within 3 business days. Competitive pricing on Seiko/Hattori calibers. 3,000+ watch movements and parts in stock. Trusted by watchmakers worldwide. 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