Replacement Caseback Compatible with Longines Flagship L4.774 Series

Restore or service your watch with this replacement stainless steel caseback, designed for watch cases compatible with the Longines Flagship L4.774 series. Precision-crafted for accurate fitment, this caseback is suitable for replacing a worn, scratched, or damaged original while maintaining the elegant and understated aesthetic of the Flagship collection.

The caseback is constructed to follow the original thread profile, thickness, and seating geometry, allowing it to close securely and sit flush against the case when installed correctly. When properly fitted with a suitable gasket, it helps maintain correct case alignment and structural integrity during servicing.

This component is intended as a direct-fit replacement for the specified reference series. Professional installation is recommended to ensure correct sealing and case integrity.