HR Nivaflex Mainspring G325 for Felsa 197, Lanco 56 - Alloy

HR Nivaflex Mainspring G325 for Felsa caliber 197, Langendorf (Lanco) caliber 56 movements plus perhaps other similar ébauche watches, alloy, new in envelope. See images for precise mainspring specifications. I likely have several of these so the one you get may differ slightly from the images. I specialize is hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do an adequate job of representing the item.