Marathon Mainspring for Longines 8.68N, 8LN, 8N - Steel

Marathon steel mainspring for Longines calibers 8.68N, 8LN & 8N and perhaps other 8/9 ligne wrist watches. See images for precise mainspring specifications. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.