--- description: Generic IW3714 case back crystal, 27mm flat with blue AR coating. Gasket included. Aftermarket replacement for Portuguese Chronograph. title: Generic IWC Portuguese Chronograph IW3714 Case Back Crystal 27mm - Sofly image: https://www.soflypart.com/wp-content/uploads/2023/09/DSC01883.jpg --- [Skip to content](#content) * [ Home ](https://www.soflypart.com "Home") * [Products](https://www.soflypart.com/shop/ "Products") * [IWC Crystal](https://www.soflypart.com/product-category/watch-parts/watch-crystals/iwc-crystal/ "IWC Crystal") * [Watch Crystals](https://www.soflypart.com/product-category/watch-parts/watch-crystals/ "Watch Crystals") * [Watch Parts](https://www.soflypart.com/product-category/watch-parts/ "Watch Parts") * **Generic IWC Portuguese Chronograph IW3714 Case Back Crystal 27mm** [![Omega Constellation 1202.10.00 Crystal](https://www.soflypart.com/wp-content/uploads/2023/09/DSC01883.jpg)](https://www.soflypart.com/wp-content/uploads/2023/09/DSC01883.jpg) # Generic IWC Portuguese Chronograph IW3714 Case Back Crystal 27mm $45.00 You Saved | Brand | Choose an optionIWC![IWC](https://www.soflypart.com/wp-content/uploads/2023/06/34.jpg)[Clear](#) | | ----- | ------------------------------------------------------------------------------------------------ | ### Discount | Quantity | Discount (%) | Price | | -------- | ------------ | ------ | | 1 - 2 | — | $45.00 | | 3 - 4 | 5 % | $42.75 | | 5 - 9 | 7 % | $41.85 | | 10 - 14 | 10 % | $40.50 | | 15+ | 15 % | $38.25 | ### Discount | Quantity | Discount (%) | Price | | -------- | ------------ | ------ | | 1 - 2 | — | $45.00 | | 3 - 4 | 5 % | $42.75 | | 5 - 9 | 7 % | $41.85 | | 10 - 14 | 10 % | $40.50 | | 15+ | 15 % | $38.25 | Generic IWC Portuguese Chronograph IW3714 Case Back Crystal 27mm quantity Add to cart x [ Checkout ](https://www.soflypart.com/checkout/) * repair Covers 99% of Repair Needs * Wholesale Discounts * Fast Global Shipping * 24/7 Customer Support ## Product Description This is a generic case back crystal (exhibition back) for the IWC Portuguese Chronograph IW3714 series, measuring 27.0mm in diameter × 0.8mm in thickness, with a flat profile and a blue anti-reflective (AR) coating. A matching sealing gasket is included. Made of sapphire or mineral glass (please verify), it offers good scratch resistance and optical clarity, serving as a direct substitute for a damaged or scratched original case back crystal. As an aftermarket part, it provides a cost-effective repair solution for watchmakers and enthusiasts. ## Features & Function * **Exhibition Back Design** – Allows a clear view of the movement (e.g., Caliber 79350) and its finishing. * **Blue AR Coating** – Reduces glare and improves clarity when viewing the movement. * **Includes Sealing Gasket** – Matching gasket included for proper sealing during installation. * **Generic Aftermarket** – Non-original but precisely sized for the IW3714 case back opening. * **Cost-Effective** – Affordable alternative to genuine parts for repair or restoration. ## Specifications | Parameter | Details | | ---------------- | ----------------------------------------------- | | Compatible Model | IWC Portuguese Chronograph IW3714 series | | Type | Generic aftermarket | | Material | Sapphire or mineral glass (confirm with seller) | | Shape | Flat | | Diameter | 27.0 mm | | Thickness | 0.8 mm | | Coating | Blue anti-reflective (AR) | | Included | Sealing gasket | ## Applications * IWC Portuguese Chronograph IW3714 series (e.g., IW371446, IW371447) * Other IWC models using the same 27.0mm flat exhibition back (verify original size) * Replacement of damaged, deeply scratched, or aged original case back crystals * Replacement of aged gaskets during repair or restoration projects ## FAQ **1\. Is this a genuine IWC case back crystal?** No. It is a generic aftermarket replacement, not original, but dimensionally matches the IW3714 and includes a gasket for direct replacement. **2\. Is the material sapphire or mineral glass?** Not specified in the description. Please confirm with the seller before ordering. Sapphire is harder (Mohs 9) but more expensive; mineral glass is more affordable but less scratch-resistant. **3\. What should I pay attention to during installation?** Clean the case back groove, place the new gasket, then the crystal. Tighten case back screws diagonally with even torque to avoid cracking. Professional installation is recommended. **4\. Will the original water resistance be maintained?** The IW3714 is typically 30m water resistant. Proper installation with a new gasket can restore everyday splash resistance. A water resistance test is advised. **5\. Is the crystal prone to scratches?** If sapphire, it is highly scratch-resistant for daily wear. If mineral glass, avoid contact with hard materials like sand. Good scratch resistance is provided, but not absolute. ## 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**. ##### Our Popular Items [ ![Zenith El Primero 18.0240.4021 Crystal](https://www.soflypart.com/wp-content/uploads/2022/07/DSC09824.jpg) ](https://www.soflypart.com/product/generic-zenith-el-primero-chronomaster-02-0310-400-sapphire-crystal-29-85mm/) ### [Generic Zenith El Primero Chronomaster 02.0310.400 Sapphire Crystal 29.85mm ](https://www.soflypart.com/product/generic-zenith-el-primero-chronomaster-02-0310-400-sapphire-crystal-29-85mm/) [ ![Breguet Classique 8067 Sapphire Crystal](https://www.soflypart.com/wp-content/uploads/2022/04/DSC09612.jpg) 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Gasket included. Aftermarket replacement for Portuguese Chronograph.","sku":"330308312","category":"Watch Parts > Watch Crystals > IWC Crystal","mainEntityOfPage":{"@id":"https://www.soflypart.com/product/generic-iwc-portuguese-chronograph-iw3714-case-back-crystal-27mm/#webpage"},"image":[{"@type":"ImageObject","url":"https://www.soflypart.com/wp-content/uploads/2023/09/DSC01883.jpg","height":"580","width":"580"}],"url":"https://www.soflypart.com/product/generic-iwc-portuguese-chronograph-iw3714-case-back-crystal-27mm/","productGroupID":"330308312","hasVariant":[{"@type":"Product","sku":"330308312","name":"Generic IWC Portuguese Chronograph IW3714 Case Back Crystal 27mm - IWC","description":"Product Description This is a generic case back crystal (exhibition back) for the IWC Portuguese Chronograph IW3714 series, measuring 27.0mm in diameter \u00d7 0.8mm in thickness, with a flat profile and a blue anti-reflective (AR) coating. A matching sealing gasket is included. Made of sapphire or mineral glass (please verify), it offers good scratch resistance and optical clarity, serving as a direct substitute for a damaged or scratched original case back crystal. As an aftermarket part, it provides a cost-effective repair solution for watchmakers and enthusiasts. Features & Function Exhibition Back Design\u00a0\u2013 Allows a clear view of the movement (e.g., Caliber 79350) and its finishing. Blue AR Coating\u00a0\u2013 Reduces glare and improves clarity when viewing the movement. Includes Sealing Gasket\u00a0\u2013 Matching gasket included for proper sealing during installation. Generic Aftermarket\u00a0\u2013 Non-original but precisely sized for the IW3714 case back opening. Cost-Effective\u00a0\u2013 Affordable alternative to genuine parts for repair or restoration. Specifications Parameter Details Compatible Model IWC Portuguese Chronograph IW3714 series Type Generic aftermarket Material Sapphire or mineral glass (confirm with seller) Shape Flat Diameter 27.0 mm Thickness 0.8 mm Coating Blue anti-reflective (AR) Included Sealing gasket Applications IWC Portuguese Chronograph IW3714 series (e.g., IW371446, IW371447) Other IWC models using the same 27.0mm flat exhibition back (verify original size) Replacement of damaged, deeply scratched, or aged original case back crystals Replacement of aged gaskets during repair or restoration projects FAQ 1. Is this a genuine IWC case back crystal? No. It is a generic aftermarket replacement, not original, but dimensionally matches the IW3714 and includes a gasket for direct replacement. 2. Is the material sapphire or mineral glass? Not specified in the description. Please confirm with the seller before ordering. Sapphire is harder (Mohs 9) but more expensive; mineral glass is more affordable but less scratch-resistant. 3. What should I pay attention to during installation? Clean the case back groove, place the new gasket, then the crystal. Tighten case back screws diagonally with even torque to avoid cracking. Professional installation is recommended. 4. Will the original water resistance be maintained? The IW3714 is typically 30m water resistant. Proper installation with a new gasket can restore everyday splash resistance. A water resistance test is advised. 5. Is the crystal prone to scratches? If sapphire, it is highly scratch-resistant for daily wear. If mineral glass, avoid contact with hard materials like sand. Good scratch resistance is provided, but not absolute. 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\u00a0info@soflypart.com\u00a0or WhatsApp\u00a0+86 18620212114.","image":"https://www.soflypart.com/wp-content/uploads/2023/09/DSC01883-150x150.jpg","offers":{"@type":"Offer","description":"Product Description This is a generic case back crystal (exhibition back) for the IWC Portuguese Chronograph IW3714 series, measuring 27.0mm in diameter \u00d7 0.8mm in thickness, with a flat profile and a blue anti-reflective (AR) coating. A matching sealing gasket is included. Made of sapphire or mineral glass (please verify), it offers good scratch resistance and optical clarity, serving as a direct substitute for a damaged or scratched original case back crystal. As an aftermarket part, it provides a cost-effective repair solution for watchmakers and enthusiasts. Features & Function Exhibition Back Design\u00a0\u2013 Allows a clear view of the movement (e.g., Caliber 79350) and its finishing. Blue AR Coating\u00a0\u2013 Reduces glare and improves clarity when viewing the movement. Includes Sealing Gasket\u00a0\u2013 Matching gasket included for proper sealing during installation. Generic Aftermarket\u00a0\u2013 Non-original but precisely sized for the IW3714 case back opening. Cost-Effective\u00a0\u2013 Affordable alternative to genuine parts for repair or restoration. Specifications Parameter Details Compatible Model IWC Portuguese Chronograph IW3714 series Type Generic aftermarket Material Sapphire or mineral glass (confirm with seller) Shape Flat Diameter 27.0 mm Thickness 0.8 mm Coating Blue anti-reflective (AR) Included Sealing gasket Applications IWC Portuguese Chronograph IW3714 series (e.g., IW371446, IW371447) Other IWC models using the same 27.0mm flat exhibition back (verify original size) Replacement of damaged, deeply scratched, or aged original case back crystals Replacement of aged gaskets during repair or restoration projects FAQ 1. Is this a genuine IWC case back crystal? No. It is a generic aftermarket replacement, not original, but dimensionally matches the IW3714 and includes a gasket for direct replacement. 2. Is the material sapphire or mineral glass? Not specified in the description. Please confirm with the seller before ordering. Sapphire is harder (Mohs 9) but more expensive; mineral glass is more affordable but less scratch-resistant. 3. What should I pay attention to during installation? Clean the case back groove, place the new gasket, then the crystal. Tighten case back screws diagonally with even torque to avoid cracking. Professional installation is recommended. 4. Will the original water resistance be maintained? The IW3714 is typically 30m water resistant. Proper installation with a new gasket can restore everyday splash resistance. A water resistance test is advised. 5. Is the crystal prone to scratches? If sapphire, it is highly scratch-resistant for daily wear. If mineral glass, avoid contact with hard materials like sand. Good scratch resistance is provided, but not absolute. 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\u00a0info@soflypart.com\u00a0or WhatsApp\u00a0+86 18620212114.","price":"45","priceCurrency":"USD","availability":"http://schema.org/InStock","itemCondition":"NewCondition","priceValidUntil":"2027-12-31","url":"https://www.soflypart.com/product/generic-iwc-portuguese-chronograph-iw3714-case-back-crystal-27mm/?attribute_pa_brand=iwc"}}],"@id":"https://www.soflypart.com/product/generic-iwc-portuguese-chronograph-iw3714-case-back-crystal-27mm/#richSnippet"}]} ```