Marco Mainspring #3349 for Universal Caliber 2xx Chronographs - Steel

Marco No. 3349 steel mainspring for Universal caliber 285, 287, 288, 292 & 386 Chronographs. 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 a pretty good job of representing the item.