Saving a Rare Zenith El Primero 4021 | Port Royal Full Restoration

🛠️ Today I’m restoring a Zenith Port Royal powered by the legendary El Primero 4021. When it arrived at my bench, the movement was in catastrophic condition: rust, missing screws, broken parts… a true wreck. The El Primero, born in 1969, was the first high-frequency automatic chronograph in history. The 4021 is a rare variation featuring a power reserve indicator and an open-heart design, showcasing the balance wheel beating at 36,000 vibrations per hour. 👉 In this video, you’ll see: The history of the El Primero and its importance in watchmaking. The shocking condition of a destroyed 4021 movement. The full restoration process with parts swapped from another movement. The final result: a Zenith Port Royal saved from destruction. ⚡ Subscribe to FrenchWatchCollector for more legendary watch restorations! FWC Website: FWC Website: https://french-watch-collector.myshopify.com/ Follow me on Patreon: https://www.patreon.com/FrenchWatchCollector Please Subscribe: https://www.youtube.com/c/FrenchWatchCollector Instagram: https://www.instagram.com/frenchwatchcollector12/ Tiktok: https://www.tiktok.com/@frenchwatchcollector12 Horotec tools: https://horotec-custom.ch/en/shop/ Horotec Facebook group: https://www.facebook.com/groups/690739231946682 Tool Shop: https://maison-venus.com/ #Zenith #ElPrimero #ZenithElPrimero #ZenithPortRoyal #WatchRestoration #Watchmaking #VintageWatch #LuxuryWatch #MechanicalWatch #FrenchWatchCollector ---------------------------------------------