Marco Marshalloy Mainspring 3274M for Longines Caliber 25.17 (9L) - Alloy

Marco Marshalloy Mainspring 3274M for Longines caliber 25.17 or 9L movements, and perhaps others, T-Brace, white alloy, 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.