Marco Marshalloy Mainspring 3350M for Landeron Chronograph caliber 48, 50, 148, 151 - Alloy

Marco Marshalloy Mainspring No 3350M for Landeron Chronograph calibers 48, 50, 148, 151 plus perhaps other calibers as well, white 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 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.