Marco Mainspring #3264 for Longines Caliber 13.15 (4LL) - Steel

Marco steel mainspring #3264 for Longines caliber 13.15 or 4LL movements, and perhaps others, T-end, new in envelope. 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 an adequate job of representing the item.